The 10 Most Common Mistakes New Pet Owners Make

Adopting a pet is an act of love. But first-day excitement often hides mistakes that cost you dearly — financially, mentally, and most importantly in your pet's well-being. Here are the ten most common mistakes and how to avoid them from day one.

1. Underestimating the real budget

The first mistake: thinking only about the acquisition cost. A dog rarely costs more than 800 EUR to adopt, but between food, vet bills, insurance and gear, expect 1,000 to 2,000 EUR per year. For a cat, the annual bill runs 600-1,200 EUR. Run the numbers before adopting, not after.

2. Picking a trendy breed

French bulldogs, Pomeranians, Maine Coons... Trendy breeds often carry severe genetic issues. French bulldogs face a 70 % chance of respiratory problems. Consult a vet before falling for an Instagram dog.

3. Neglecting early socialisation

A puppy must meet dozens of people, animals and environments before 16 weeks. Skip this window and you get a fearful or aggressive adult. For a cat, the critical period runs from 2 to 9 weeks. Use it well.

4. Confusing punishment with training

Yelling, hitting, nose-rubbing: these methods belong to the 20th century and are rejected by every serious behaviourist today. Positive reinforcement training produces dramatic results without breaking trust.

5. Overfeeding out of love

Slipping treats at every pleading look is the number one cause of obesity in the dog. An overweight dog lives on average two years less. Weigh meals, cap extras at 10 % of daily intake.

6. Skipping vet visits

Many believe a pet "doing fine" doesn't need a vet. Wrong. An annual check-up catches silent diseases (diabetes, kidney issues, dental problems). For senior pets, twice yearly is recommended.

7. Leaving a parrot alone all day

The parrot is an extremely social animal that, in isolation, develops devastating behaviours: feather plucking, self-mutilation, depression. Before adopting, ask yourself if you can dedicate 4 to 6 hours of interaction per day. If not, pick another species.

8. Setting up a rabbit's cage wrong

A rabbit locked in a cage 24/7 develops bone, muscle and behavioural problems. It needs at least 4 hours of free roaming daily in a secured space. The cage is a refuge, not a prison.

9. Ignoring stress signals

Pinned ears, low tail, excessive panting, refusal to play: these signals point to chronic stress. Learn to recognise them and adjust the environment before they escalate into aggression or destruction.

10. Adopting on impulse

The ultimate mistake. A pet is not a birthday gift, nor post-breakup therapy. It's a multi-year commitment that deserves calm reflection. Before adopting, run a "mental trial period": for two weeks, picture yourself managing this animal daily — rainy weekends, holidays, vomit at 3 a.m. included.

Conclusion

Most behaviour problems don't originate in the animal but in the human. The good news: these mistakes are reversible if you fix them early. Still unsure which species to pick? Read our beginner's guide or take our personalised quiz.