Carol, I think that's great that you have a local group that wants to make the snuggles!! Are you going to do them oddball style, with different people doing each section? Or are you all just working on them together with each person doing their own? I like doing the oddball ones, because it's really fun to see the color combinations at the end. The ones we do here are all garter stitch, with two strands of worsted held doubled. This makes a nice cushy snuggle. I know the snuggle website has patterns for other stitch patterns but I haven't used any of them.
The animals at your local shelter are lucky to have your group knitting and crocheting for them! Let us know how it works out.