Thanks for the comments everyone!
I've never seen those coloured baby dinos before - I'm assuming they're customs? If so, fantastic job! They look great.
Nope, no custom animals on the table at all, everything is an official release, though some are hard to get for various reasons. The baby dinos are from the Funpark in Zirndorf. They are sold in the shop there, and as far as I am aware that is the only place you can get them. I have a topic page specifically about animals that have only been released at the Funpark, it is
Here My favorite Funpark animal ever is the glow in the dark lobster. It's been discontinued since about 2010/11.
Is there a list somewhere of the few rare animals you haven't found yet? For such a marvellous project, I'd love to help. You never know, if I've got one of those lying around, it would be an honour to donate.
I don't have one put together at the moment but it's something I will work on shortly. Mostly it's very old animal mold variations, things like cows with three udders, or the bright Vedes game rabbits in the poses I don't have. Part of this project ended up being a lot of time spent figuring out if something counted as a variation or not, and reconciling my lists of what I have with my official list and deciding if things should be added to the official list or not. As of today I am counting 1157 on my list of all variations ever. Old variations keep popping up from time to time, so there may be more. As of right this minute my list of animals I don't have is 98.