What Should I Bring to My Dog's Cancer Treatment Appointments?

Short answer: Your dog's records, your home log, a written list of questions, and more time than you think you need.

The item most owners forget is the home log. Your notes on appetite, weight, temperature, and side effects since the last visit are data your oncology team cannot get anywhere else, and guidelines specifically direct them to monitor appetite and body weight closely (American Animal Hospital Association, 2026a).

The question most owners forget to ask is whether your dog should be fasted. The answer varies by clinic and by appointment type, and getting it wrong can cost you the appointment.

Before You Go: Three Things to Confirm When You Book

1. Does my dog need to fast, and for how long?

Policies differ, so ask rather than assume. Texas A&M's teaching hospital instructs owners to withhold food for 12 hours before an oncology appointment, because many diagnostics are more accurate on an empty stomach and it reduces sedation-related complications (Texas A&M Veterinary Medical Teaching Hospital, n.d.). Radiation is stricter, since each session requires anesthesia. MedVet instructs owners to fast pets for at least 10 hours before each radiation session (MedVet, 2023/2024).

Two things about fasting that matter.

Fasting means food, not water. MedVet permits water and previously prescribed medications during the fast (MedVet, 2023/2024). A dog going under anesthesia should not arrive dehydrated. Confirm with your clinic, but do not withhold water on your own initiative.

Longer is not safer, and some dogs need different instructions. Tell the clinic when you book if your dog is diabetic and on insulin, is a puppy, or is a toy breed. Fasting instructions change for these patients, and you need to ask specifically whether to give insulin or other medications during the fasting window.

2. How long should I block off?

A first oncology consult at BluePearl runs about an hour, with 90 minutes recommended (BluePearl Pet Hospital, n.d.). At a teaching hospital, initial testing and treatment together could take an entire business day (Texas A&M Veterinary Medical Teaching Hospital, n.d.). Radiation sessions may take up to an hour and a half each (MedVet, 2023/2024).

3. What records do you already have, and what should I send ahead?

Sending records in advance is better than carrying them in. Recent test results are often provided by the primary veterinarian beforehand (BluePearl Pet Hospital, n.d.). Confirm what arrived so you can fill gaps rather than duplicate tests.

1. The Paperwork Folder

• Any records you have, including radiographs, lab results, and copies of your pet's chart (Texas A&M Veterinary Medical Teaching Hospital, n.d.)
• The pathology or biopsy report, usually the document your oncologist wants first
• Recent bloodwork, especially if done elsewhere
• Imaging on disc or via portal, plus the radiologist's written report
• A current medication list with doses and timing, including supplements
• Your referring veterinarian's contact information. Some oncology services, including Texas A&M's, require a referral from your primary veterinarian (Texas A&M Veterinary Medical Teaching Hospital, n.d.)
• Insurance information and your payment method

Keep digital copies on your phone as backup. Folders get left on kitchen counters.

2. The Home Log

This is the part that changes the quality of your appointment.

Bring detailed notes about behavioral or physical changes you have observed at home (BluePearl Pet Hospital, n.d.). Specifically, track:

• Appetite, including what your dog would and would not eat
• Weight, or at least whether the collar or harness fits differently
• Temperature readings you took, with dates and times
• Vomiting or diarrhea, with dates, frequency, and appearance
• Energy level compared to before treatment
• Medications given, including anything you started for side effects
• Anything you almost did not mention. Report even mild changes in eating habits rather than waiting (American Animal Hospital Association, 2026a)

Guidelines note that appetite loss is one of the most common reasons owners stop chemotherapy prematurely, and that it is often manageable when caught early (American Animal Hospital Association, 2026a). Your log is how it gets caught early.

3. Your Questions, Written Down

Bring specific questions for the oncologist (BluePearl Pet Hospital, n.d.). Write them before you go, because appointments move quickly and grief scrambles memory.

Useful starting questions:

• What are we hoping this treatment achieves, and how will we know if it is working?
• What side effects should I expect, and which ones mean I call you?
• Which days are the risky ones for my dog's specific drug?
• What would make you recommend stopping or changing course?
• What does the next month look like, practically?

Ask for a written summary if one is not offered. BluePearl provides a written summary of the discussion after the appointment (BluePearl Pet Hospital, n.d.), and many practices will do the same on request.

4. For Your Dog

• A secure leash and harness, or a carrier for small dogs
• High-value treats, if your dog is not fasting. Confirm first.
• A familiar towel or blanket that smells like home
• Water and a collapsible bowl for the trip
• Towels and a seat cover for the car
• Poop bags and cleanup supplies, including chemotherapy-rated gloves if your dog is still within the safe-handling window from a previous treatment. That window is commonly 48 to 72 hours after injectable chemotherapy and can be longer for oral drugs, so ask your team for your dog's specific number
• Any medication due during the appointment window, with a note of when the last dose was given

5. For You

• A way to take notes, whether a notebook or your phone. Ask before recording audio.
• A second person, if you can arrange it. One person listens, one person holds the dog, and neither has to remember everything alone.
• Something to occupy the wait. Texas A&M suggests bringing entertainment, noting that owners may leave during testing and treatment (Texas A&M Veterinary Medical Teaching Hospital, n.d.)
• Food and water for yourself, particularly for long appointment days
• A charged phone, since these days run long

What Is Different at a First Consultation

Expect an information exchange more than a procedure. The oncologist will examine your dog and discuss the diagnosis, treatment options, and prognosis, and you should receive itemized estimates for the options discussed (BluePearl Pet Hospital, n.d.). Treatment may begin at that visit if appropriate.

Bring your decision-makers. If someone else in your household will weigh in on whether to treat, this is the appointment for them to attend.

What Is Different on Chemotherapy Days

Bloodwork comes first. A complete blood count is the primary tool for assessing your dog during the vulnerable period after treatment (American Animal Hospital Association, 2026b).

You will likely have two kinds of blood-draw visits. One is the bloodwork done on a treatment day to decide whether to dose. The other is the nadir recheck, a separate appointment roughly a week after treatment, when counts are at their lowest. Ask which type each visit is, since only one of them may involve giving a drug.

Know this before you go: your dog may not receive chemotherapy that day. Published thresholds direct the team to delay treatment when neutrophils are low. At counts between 1,000 and 2,000 cells per microliter without fever, the guidance is to monitor and delay chemotherapy if it is due. Below 1,000 without fever, the guidance adds oral antibiotics and again delays the next dose (American Animal Hospital Association, 2026b).

A word of caution on those numbers: laboratories report neutrophil counts in different units, so a result printed as "1.5" may be the same value as 1,500. Ask your team to read your dog's number to you rather than comparing it against an article yourself.

The row that matters most is the one with a fever in it. Below 1,500 cells per microliter with fever, the guidance is hospitalization with intravenous fluids and antibiotics (American Animal Hospital Association, 2026b). You cannot measure a neutrophil count at home, but you can measure a temperature. Fever during the low-count window is an emergency. Call immediately rather than waiting for the next scheduled appointment.

A delay in treatment, by contrast, is not a setback in your dog's care. It is the safety system working. Knowing it is possible in advance keeps it from feeling like bad news in the moment.

What Is Different on Radiation Days

Radiation is typically administered under general anesthesia, because the pet must be completely still for accurate delivery (Weir et al., n.d.).

That changes your preparation:

• Fast your dog per your clinic's instruction. MedVet's protocol is at least 10 hours, with water and prescribed medications still allowed (MedVet, 2023/2024)
• Plan for repetition. Course length depends on the protocol and the tumor. MedVet describes full-course radiation as typically daily, Monday through Friday, over three to four weeks with 16 to 19 treatments, and palliative courses as four to six treatments over three to six weeks (MedVet, 2023/2024). VCA describes intensity-modulated protocols as running Monday to Friday for two to three weeks (Weir et al., n.d.). Your oncologist will tell you which applies
• Budget the drive, since daily travel for several weeks is often the hardest logistical part
• Bring the E-collar once skin reactions begin, so it does not get forgotten at home

Two Things That Surprise People

It takes longer than the appointment slot suggests. Plan around the possibility of a full day rather than an hour, especially early on (Texas A&M Veterinary Medical Teaching Hospital, n.d.).

You will not remember what was said. This is normal and has nothing to do with how well you are coping. Written questions in, written notes out.

Frequently Asked Questions

Does my dog need to fast before every appointment? Not necessarily, and it depends on the clinic and the appointment. Some oncology services ask for 12 hours before a visit (Texas A&M Veterinary Medical Teaching Hospital, n.d.), and radiation under anesthesia requires fasting, commonly at least 10 hours (MedVet, 2023/2024). Ask when you book. Note that fasting almost always means food only, since water is normally still allowed (MedVet, 2023/2024), and that diabetic dogs, puppies, and toy breeds need individualized instructions.

Can I stay with my dog during treatment? Generally you will be separated from your dog during testing and treatment. Texas A&M tells owners they are welcome to leave the building during that time (Texas A&M Veterinary Medical Teaching Hospital, n.d.), and MedVet monitors pets closely during and after treatment before returning them to you (MedVet, 2023/2024). Radiation is always performed under anesthesia with no one else in the room. Ask your clinic how long to expect and whether waiting on site is useful.

Why does my dog need bloodwork every time? The complete blood count tells the team whether it is safe to treat that day and whether the previous dose hit too hard (American Animal Hospital Association, 2026b).

What if I forget to ask something? Call. Oncology teams expect follow-up questions, and a written summary of your appointment helps (BluePearl Pet Hospital, n.d.).

The Bottom Line

Records, your home log, written questions, and a realistic amount of time. Confirm the fasting instruction when you book, and go in knowing that a bloodwork delay is possible and is not a bad sign.

The home log is the piece worth building a habit around. It is the only thing on this list your oncology team cannot get without you.

This article is provided for educational purposes only and does not constitute veterinary medical advice, diagnosis, or treatment. Fasting requirements, appointment structure, and clinic policies vary considerably between practices. Always follow the specific instructions given by your own veterinary oncology team.

References

American Animal Hospital Association. (2026a). Therapeutic modalities: Chemotherapy. In 2026 AAHA oncology guidelines for dogs and cats. https://www.aaha.org/resources/2026-aaha-oncology-guidelines-for-dogs-and-cats/section-5-therapeutic-interventions/therapeutic-modalities-chemotherapy/

American Animal Hospital Association. (2026b, January 16). From the guidelines: Chemotherapy nadir appointment considerations. AAHA Trends Magazine. https://www.aaha.org/trends-magazine/publications/from-the-guidelines-chemotherapy-nadir-appointment-considerations/

BluePearl Pet Hospital. (n.d.). What should I expect at my first oncology visit? Responses attributed to Brooke Britton, DVM, DACVIM (Oncology). https://bluepearlvet.com/what-should-i-expect-at-my-first-oncology-visit/

MedVet. (2023, May 12; updated 2024, August 22). Radiation therapy in dogs and cats. https://www.medvet.com/radiation-therapy-dogs-cats/

Texas A&M Veterinary Medical Teaching Hospital. (n.d.). Oncology FAQs. https://vethospital.tamu.edu/small-animal/oncology/oncology-faqs/

Weir, M., Stoewen, D., & Pinard, C. (n.d.). Radiation therapy. VCA Animal Hospitals. https://vcahospitals.com/know-your-pet/radiation-therapy