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The two stages nobody warns you about

Most owners are ready for a puppy or a kitten and ready, eventually, for an old dog or cat. The two stages that catch people out sit in between. The first is the adolescent dog: somewhere around six months a trained puppy seems to forget everything, tests every boundary and stops listening — and this teenage phase, not puppyhood, is the peak age at which dogs are given up, usually just weeks before it would have settled. It is neurological, it is normal, and it passes.

The second is what happens before a kitten ever reaches you. A kitten's confidence for life is largely set in a short socialisation window between two and seven weeks, which closes before most kittens go to their new homes — so where a kitten spent its first two months matters more than anything you do afterwards. Knowing both of these changes how you read a difficult stage: not as a failure, but as weather that passes. Match the animal to your life at the start — our lists of the best dogs and cats for first-time owners help — and the rest of the arc is easier.

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