I have some suggestions for animals:
wolf (not rideable and is good against horses)
giant wolf (rideable and is good against elephants)
coyote (not rideable and sometimes will jump on enemys)
cheetah (not rideable and is very fast)
tiger (rideable good against coyotes,wolfs, and horses)
lion (rideable good against tigers)
special animals:
phoenix (rideable flys and is immune to fire and when it is hit by melee the soldier who hit it will catch fire and shoots flames that burn enemys)
giant cheetah (rideable faster then a regular cheetah)
griffin (rideable flys and grabs enemys and drops them from very high up and bites enemys)
that's all I can think of and I think this game is better then TABS also hope you like my suggestions JNI.