Has anyone gotten together a list of stats for Animal Companions? Total hit dice, BAB, AC, increases per level, etc? I sometimes wonder if it makes more sense from a mechanics point of view to (for example) keep your Attack Dog from the start of the game, or, when the time comes, dismiss him and summon a Brown Bear. So, anyone have the numbers the game uses?
I always got better results switching with black bear, then brown, then polar. They should have the same stats in monster manual but there is something VERY corrupted about how the AI improves creatures accordingly with druid level. Summoned creatures look influenced by spellcaster level as well, even if they should not.