Another favorite is actually a critter that I found in another book about future evolution. I call it Ophiuchus. It's a tiny squirrel. Where it lives there are many species of birds and bats that will feed on these squirrels. In turn, the circle of life continues, and there is a variety of snake that will prey on the birds and bats that feed on the squirrel. Ophiuchus has developed an interesting way of defending it's self. The tail has markings on the end that resembles the head of this bird and bat-eating snake. When a bird or bat attacks it, the squirrel will duck under a branch and move it's tail akin to how the hunting snake would move it's head. Ophiuchus even hisses when necessary, further mocking the hunting snake. Here is a pic I made of the squirrel in 2004:
This is the animal at work.
Of course anyone who knows me knows my favorite animals are lemurs. Yes, I've even thought of a place for them in the future World. There are some of course who inhabit the trees, as all lemurs should. But I've also thought up one who has taken to the seas and oceans. I call it Oreolemur. They are related to today's bushbabies. Even today, there are prosimians that are very good swimmers, and one variety that even feeds on water reeds. Oreolemur goes a step further and feeds on fish, squid and crabs. They swim very well propelling themselves like modern sea lions, and catch fish and squid in "mid-flight". Their swimming habits are very un-primate-like. Unlike other primates when they swim, Oreolemur does not use their arms to stroke. But rather they use their huge, flat, fully-webbed feet. The arms and tail are used to steer the animal on a dime. They are so fast in the water, they can even leap directly out of the waves and onto the rocky cliffs that make up their land-based roosts. The reason they are so fast is sharks and giant sea-genets take these lemurs in the water. Yes, even the future will have sharks! They were here before us and they will be here when we are gone! Anyway, here's some drawings I did of Oreolemur in 2005.
Here's one resting on the cliffs.
These are some of my favorite animals. My Metazoic site goes into detail about the lifestyle of these animals.