I would be interested in hearing about Taggart. Particularly since he's been through some major life changes recently... Like moving from Europe to the U.S and then again moving within the U.S from one coast to the other, losing Tiki and Leo and him all of a sudden being an only pet, gaining a human "dad" etc.
He doesn't seem particularly bothered though. He seems to always just live right in the moment and gets fun out of the smallest things. Or at least that's how I perceive it...

I don't know his exact birthday though. But somewhere in February-March 2006 is probably most accurate.