Many of us have pets that we love, and they in turn, the pets can give us so much love too, wagging tails, purring and zapping are all signs of excitement.
Yes, ... a nice link to a very "touching" display of affection! One with which, I should imagine, ALL bird and/or animal lovers will be familiar, especially those who - like Mick (and my daughter) for example - are fond of dogs in particular!