In the comments, viewers have shared their own stories of ageing pets, many admitting they'd never noticed the change until it happened. Videos like this often hit hardest because they're so personal.

"To look at them, you might assume that both Great Danes and Irish Wolfhounds crave lots of exercise, because they’re so big.

The Airedale terrier and the Irish terrier are both members stunning dogs that are popular pets due to their affectionate ...