Reviewed in November 2026
What having a pet really costs (and what people forget)
Food is only one part. A list of the regular costs, the one-off costs and the unexpected ones, so you can do your sums before, not after.
Prices vary a lot depending on the species, the size, the city and the clinic, so we do not give figures here. We give you the full list so you can ask for a quote for each thing.
At the start
- Adoption (donation) or buying from a registered breeder.
- Microchip, registration and first vaccinations, if they have not been done already.
- Neutering: compulsory for cats before six months of age (Ley 7/2023, the Animal Welfare Act, art. 26.i).
- Basic kit: bed, bowls, carrier, lead and harness, litter tray, cage or aquarium depending on the species.
Every month or every year
- Food and treats.
- Litter, bedding or upkeep of the aquarium or terrarium (light, heat, filters).
- Worming and flea treatments, check-ups and booster vaccinations.
- Third-party liability insurance and, if you want, health insurance or the clinic's health plan.
- Grooming, for breeds that need it.
- Toys and replacements: they break and wear out.
What people forget
- Emergencies and illness: the biggest cost and the hardest to predict.
- Boarding or a sitter when you go away.
- A trainer if behaviour problems appear.
- The old-age years, when vet visits go up.
A tip: put aside a small amount each month for your pet's unexpected costs. The day you need it, you will be glad.