Monster attacks that include trip

[Marios]

Hello!

Quick question! When a monster's attack says, for example, "Bite +8 (1d6 + 6 plus trip), does it mean that whenever the monster scores a hit it automatically trips its opponent or does it still have to succeed on a CMB check?

Does it provoke an AOO by trying to trip this way? I think not, but, still had to ask!

Thanks a lot for your insight!

[Cheapy]

From the universal monster rules:

Quote:

Trip (Ex)

A creature with the trip special attack can attempt to trip its opponent as a free action without provoking an attack of opportunity if it hits with the specified attack. If the attempt fails, the creature is not tripped in return.

Format: trip (bite); Location: individual attacks.

[Marios]

Cheapy wrote:

From the universal monster rules:

Quote:

Trip (Ex)

A creature with the trip special attack can attempt to trip its opponent as a free action without provoking an attack of opportunity if it hits with the specified attack. If the attempt fails, the creature is not tripped in return.

Format: trip (bite); Location: individual attacks.

Aha! Thanks!