As for animals and hide bonuses:
Leopards have a +4 racial bonus on Hide checks. *In areas of tall grass or heavy undergrowth, the Hide bonus improves to +8.These in particular were the ones I was thinking of. However, I noticed that it did seem to vary more between animals than I remembered. What I did notice was that all of them were divisible by four, and quite a few recieved a different environment bonus. Most of them had a +4 in their normal bonus, and if they did not, it was their environment bonus instead (and they recieved no normal bonus)*Hyenas have a +4 racial bonus on Hide checks in areas of tall grass or heavy undergrowth.
That being said, I realize that all of my minor suggestions will have relatively little effect on the overall creature, so I don't really care if you dismiss them.
Even if I did care, hey, its your creature.