-1 for sentimental rock and Japanese women wearing monkey ears crying about the bond between animal and man.
And the concept of betrayal is just not as well developed as the feeling of trust toward other animals they've been cooperating with for a long time.
Why would Pankun betray his big tall ugly hairless friend, especially when it's obvious that bigtalluglyhairless is just a dorky joker?
And James the dog's loyalty? He saves his long armed hairy friend from snakes in trade for drinking water! When you remove natural predators from the equation, any animal can learn to love a completely different species. Barring the love between cats and cuttlefish of course.