My sister-in-law purchased this as a gift for String Bean's birthday:
The Where's My Tail? puzzle is made by Infantino and can be found at a pretty reasonable price. (For some reason, Amazon is listing this at $45 right now. I think it really should be $15 or less. There must be a glitch.)
Just this evening, we put together this puzzle 5 times before I called it quits. I cannot believe how quickly my 2 year old is matching the parts together. It is really amazing!