Service work needs to fit the individual dog, the handler and the job. Persistent distress, unsafe behavior or physical discomfort are reasons to pause and get appropriate help. A dog’s breed, size or one difficult training session does not settle the whole question.
Use these ten factors to prepare a conversation with your veterinarian and a qualified reward-based trainer. They are not a pass-or-fail test you can use to diagnose a dog or guarantee a future service partner.
1. Physical comfort during the proposed work
Describe the actual day to your veterinarian: the walking, travel, waiting and tasks it would involve. Mention changes such as stiffness, reluctance to move or difficulty getting comfortable. Cornell’s veterinary guidance on pain explains why changes in movement and behavior deserve attention. Your vet should decide which examination or tests are appropriate.
2. Health history and ongoing care
Gather the health information you have and discuss relevant screening, treatment and follow-up. A previous injury needs individual assessment; a normal screening result cannot rule out every future problem. Ask what care would be needed to keep this particular dog comfortable over time.
3. Sensory needs and usable cues
Consider the information the dog must notice for the proposed tasks and the cues you can reliably provide. Tell your trainer if a cue works in one position but not another, or if you need a different way to deliver it. Plan around both partners’ abilities.
4. Size and task fit
Start with the action you need, rather than a preferred silhouette. Retrieving a suitable dropped object is a different physical job from pulling or bearing weight. Large size does not establish that loading a dog’s body is safe. Discuss physical tasks with appropriate veterinary and clinical professionals; AP’s mobility assistance guide covers those distinctions.
5. Body condition and everyday care
Ask your veterinarian about a suitable nutrition and activity plan when needed. Consider whether feeding, grooming, toileting and rest can be supported in your household. Body condition is a care question, not a judgment about a dog’s worth.
6. Comfort in the places you need to go
A dog who learns happily at home may find a crowded station overwhelming. Discuss the environments your life actually involves. Persistent fear or distress should not be pushed through to complete an outing. A dog’s comfort matters alongside whether they can follow a cue.
7. Response to distractions
Look at what happens when you make a situation easier. Can the dog return to a familiar activity with more distance or fewer distractions? A trainer can help distinguish a skill that needs teaching from a persistent difficulty that makes the proposed work unsuitable. Avoid deliberately provoking a reaction to “test” the dog.
8. Safety around people and animals
Aggression, guarding or other unsafe behavior calls for veterinary and qualified behavior assessment. Prevent situations where someone could be harmed; do not use a busy public place to see whether the dog will cope. Reward-based methods are the approach recommended in AVSAB’s humane-training guidance.
9. A workable balance of activity and rest
Compare the dog’s needs with the whole day, including time off duty. Consider whether you can provide exercise, enrichment and rest with the support available to you. A backup care arrangement can matter as much as a well-planned lesson.
10. Willing participation over time
Notice whether your dog readily joins familiar practice and remains comfortable with the expected routines. Review progress across ordinary days, rather than making a life decision from one unusually good or difficult session. A trainer can help assess the pattern without promising that every candidate will succeed.
Decide on the next step, not a permanent label
For a manageable skill gap, agree on an easier exercise and what improvement would look like. For suspected pain or persistent distress, pause the relevant work and seek assessment. If the role continues to conflict with the dog’s welfare or safety, discuss a different role and another source of assistance for the handler.
Choosing a companion role can be a responsible outcome. For a fuller selection discussion, read how to choose a service dog candidate. If your next question is about outings, see public-access rules and practical skills.
Give your own preparation the same care as the dog’s suitability. Service Dog Standards works alongside the Americans with Disabilities Act (ADA), providing training and behavior standards and education about the human handler’s responsibilities. Review that foundation before choosing a candidate. It gives you and your trainer a shared starting point for planning the time, care and practice a safe, successful partnership needs.