Above is a sweet set of nursery ware designed by Robert Jefferson in 1962. What you can't see on the mug, in addition to the the appaloosa horse, is that there's a zebra on the other side, and joining the seal, impala and polar bear, on the bowl, is a bactrian camel. Which does seem like a rather specific group of animals.
The factory mark on the base dates this set to somewhere between 1967-72, so it could have been around in time for my 1st birthday. And no doubt my collection would have been much better had I started collecting then. But I have no regrets about this particular missed opportunity, as still I'm too attached to my very practical and happy Melmex plate below to have swapped.