I imagine vets that come to your property cost more than our suburban vets. We felt if $$$ was an issue we would choose only ONE pet after we retired and firstly remodeled the cottage.
Dogs cost a lot yearly with required vaccinations, routine health visits like teeth-cleaning, local county/city licensing, housing, feed, medicines, etc. Cats require a little less $$$ maintenance but vet bills and medicines still add up plus DH already had dog and cat pets before and wanted to try chickens. I'm a farm kid so any pet he picked was fine w/me.
However, as w/ any pet there also comes the responsibility, caring, and commitment to the choice of animal that fit our budget. Small property, small fixed income, hence, very small backyard flock