An example:
A Dire Bear has two Claw Attacks and a Bite attack. According to my own knowledge of the rules as written, a creature with only primary natural weapons doesn't gets more attacks as the BAB increases, but it does get additional attack rolls for each natural weapon it has.
So, does this means that a monster with multiple primary attacks can use them as per the Two-Weapon fighting rules? Or do I treat them as separate weapons that can only attack once per turn unless it has secondary attacks?
Best Answer
I believe creatures with multiple primary attacks can use all their attacks in a round as a full-attack action. Otherwise if they make an attack as a standard action, they only get one of their attack types.
This is a difficult question and I had to do some searching and comparing. But I found another question on Stack Exchange where an answer read as such:
Looking at the stat block for a Great Wyrm Red Dragon, its melee full-attack would look like: bite +37 (4d8+24/19-20), 2 claws +37 (4d6+16), 2 wings +35 (2d8+8), tail slap +35 (4d6+24). Notice by the bonus that both the bite and the claws are primary attacks, but can be used in the same round if the attack is a full-attack.