To all the fathers who might be reading here (*makes a very surprised face at the idea*). Cab Drollery has a link to a great photo gallery of good fathers in the wider animal realm.
Well, the pictures are great. Some of the texts aren't terribly clearly though out. For instance, though it's true that in many species it's the female who does all the parenting it's also true that in a very large number of species (insects, say) parenting doesn't amount to much from either parent and yet in others it's the herd or the pack which at least contributes to the parenting of all its young. But whatevah.