Somewhat, although it doesn't really answer the question of whether the Gibbering Mouther (and similar creatures) that have a number then the type of natural attack means that they have that many attacks in a full-attack action.
So that would be 6 bites +7/+7/+7/+7/+7/+7 (1d4 plus grab).
I guess my complaint that there seems to be some inconsistencies with how the attacks are written down and could not find anywhere that states that a number in front of a natural attack means that the creature gets that many of those type of attacks. I see no reason why it can't look the same as a manufactured weapons attack pattern.
Also, sometimes when a creature is using two weapons, they don't include a stat for using just one, like in a single attack. An example is the Dark Stalker, which has two short swords so it is presented as +6/+6. If you only wanted to make one attack, you would have to know that it had Two Weapon Fighting and thus adjust his attack to +8 instead of +11.
Now you could argue that "obviously if a creature uses two weapons then it would naturally have Two Weapon Fighting", but when I am trying to run a game, especially if I have to refer to the book during the battle (maybe in a random encounter) I want to easily know what I numbers I need to use. I don't want to have to convert a lot of basic things on the fly.
Now I do understand that you can't put every thing in the stat blocks and that you do need to understand the creature to use its special abilities and exceptions.
What I would like to see is that natural weapons are presented in the same format as manufactured weapons and that if making one attack with a weapon is fundamentally different, (which means that you don't just have to take the first number in the set for a single attack versus a full attack) that it is presented as such in the monster's description.