Will Falconer, DVM Moderator
Hi Holly,
I'd not buy into the guilt the vet wants to lay at your feet for not spaying.
In order of importance, I'd rank the following as contributing causes to cancer of any kind:
1. Vaccinations (minimal is better than maximal, but they still count)
2. Inherited chronic disease from ancestors
3. Toxic exposure (flea meds, HW meds top the list, but right up there are herbicides and pesticides in the environment)
4. Poor diet (the further from prey, the more carbs and byproducts and preservatives, the more risk)
Cancer is never a single cause disease, that's a given.