I'm looking for an entry in the rules that tells me that animal companions do not get additional attacks with a high BAB bonus. But I can't find anything.
The only thing I found was this example in the "rules of the game" column on the wizards page:
For example, a wolf animal companion with a 9th-level master has 8 Hit Dice (2 racial Hit Dice and 6 bonus Hit Dice), a base attack bonus of +6, and a Strength score of 16 (base 13 increased by 3). The wolf companion attack bonus with its bite is +9 (+6 base, +3 Strength). Because a wolf has only one natural weapon (its bite), the wolf gains a second bite attack when it uses the full attack action. The attack bonus for this second attack is +4 (9 – 5).
so, is that correct and why? who gets a second attack at BAB +6 and who doesn't? and where is it in the rules?
EDIT:
what I also found is this clear statement … but this is from the pathfinder rules so I am not sure if the same is true for 3.5:
Animal companions do not gain additional attacks using their natural weapons for a high base attack bonus.
Best Answer
No. From the SRD, Natural Weapons:
The "Rules of the Game" column is describing the effects of a Druid class feature, which grants Multiattack to animal companions even if they don't have the prerequisites, and grants a bonus attack if they normally have only one attack. The extra attack has nothing to do with BAB and two attacks is all that Druid's wolf can have, regardless of the Druid's level.