Yep! That's pretty much what I'm picturing in Andrewsarchus except bigger and meaner. There was a "Walking With Prehistoric Mammals" show some years ago that did a 3d animation that really was not that far off from how Pakicetus has been reconstructed, though of course they went a little wild imagining the color scheme. That's what I am looking for--I have a character that has an Andy as a mount.This could be very difficult because Andrewsarchus is known only from a single skull of immense size - more than twice the length of the skull of the largest living bear. This would make it the largest mammalian predator ever to exist. Andrewsarchus has long been associated with the Mesonychids and all the past reconstructions are based on these association. Interestingly, Mesonychids had hoofs instead of claws giving them the moniker "wolves on hooves". They may be related to the early artiodactyls (a group that includes cattle, camels, pigs and hippos). Many scientists now consider that Andrewsarchus may not be a Mesonychid after all and that it could possibly be an artiodactyl (a discovery of its post cranial skeleton would clear this up once and for all). If this is the case, a reconstrution should be more like Pakicetus, an ancestral whale that had legs and walked on land. And yes, whales are artiodactyls and its closest land based relative is the hippo (Cetacea and Artiodactyla are now combined together as Cetartiodactyla). Confusing?