Dogs do not suddenly become old on a particular birthday. Ageing happens gradually, often through small changes that are easy to overlook: a slower morning walk, a longer pause before climbing the stairs, less enthusiasm for a favourite game or more time spent resting.

Cats have a remarkable ability to adapt to their surroundings, and many remain active, affectionate and curious well into their later years. Ageing, however, can gradually change how they move, eat, sleep, groom and interact with the world.

Rabbits can be wonderfully expressive companions, even when their communication is subtle. A relaxed stretch, an enthusiastic approach at feeding time or a quiet moment resting beside a bonded companion can reveal a great deal about how they are feeling.

Growing older is a natural part of every animal's life, but ageing does not affect all pets in the same way. A twelve-year-old dog, an eight-year-old rabbit, a twenty-year-old parrot and a senior horse may have very different needs, even when each is considered older for their species.