Pet Tribute Creations of Ohio will, for a small fee, take a picture that you provide of your late lamented pet and insert it into an entirely tack-free religious setting. For some samples, see here.
My favourite - though the one of Jesus grappling with a cat that obviously wants to be somewhere else comes a close second - is this one.
I is serious Saviour.I is holding rather ugly doggy.
Stop licking my stigmata, doggy.