If a monster uses a full-round attack, it can use all the attacks listed, right? Does this still apply if one of the attacks is melee and the other is ranged?
Do you have a specific example in mind?
I have melee and ranged attacks. My massive, armored claws and my even more massive armored teeth, not to mention my armored horns and my armored tail. And, my armored tail can fire six armored spikes farther than you can shoot a bow.
Alas, I cannot do all this at once for I cannot slap you with my armored tail and fire spines from it as well. However, don't think for even a single round that I cannot chomp, gore, and claw your fighter friend while I impale your more remote wizard friend with a volley of tail spikes.
CHOMP!!!!
I believe so, yes. Say you're fighting with daggers—stab/stab/throw/stab is just as valid an action as stab/stab/stab/stab, assuming you have two daggers or Quick Draw.
If a monster uses a full-round attack, it can use all the attacks listed, right? Does this still apply if one of the attacks is melee and the other is ranged?
Anyone can full attack and use those attacks with iterative melee or ranged attacks as long as they are all legal to do.
Example: level 20 fighter starts a round with a melee weapon and shield, swings twice and kills his target. He can drop his melee weapon, quick draw two throwing weapons and throw them as his last 2 attacks.
Example: Level 20 fighter starts a round with a 2 handed melee weapon, kills a target with his first swing and drops the sword, quick draws a shortbow and shoots three arrows at targets at range.
In the case of monsters this is also true if they use iterative attacks, it works just like characters.
If they are a natural attacks I believe they are limited to the attack sequence specified on a full attack. I am unaware of anything that would allow natural melee and ranged attacks to be combined on a full attack without a specific exception being written into the creature.
This is why natural attacks are listed in attack sequences (claw, claw, bite or Bite and sting, etc.) and are different from iterative attacks.
As a rule, no*. You can't swing a sword and fire a bow with the same full attack action, and as DM_Blake pointed out, monsters also have to go with one or the other. There are some monsters who have specific special abilities that allow them to use ranged attacks and melee attacks simultaneously, but they are the exception.
And honestly, I'm trying to think of one of those exceptions and can't. They're pretty rare.
*EDIT: Kobold cleaver's example not withstanding.
You misread DM_Blakes statement. He was pointing out that you cannot use the tail as both a melee and and as a ranged weapon in the same round because it is the same limb. But, you could do either in combination with other attacks.
For example you cannot: Claw/Claw/Bite/Tail/Shoot tail spikesbut you can: Claw/Claw/Bite/(Tail OR Shoot Tail Spikes)
Note: this assumes that the ranged attack does not have a specific attack action such as the Manticore's tail spikes.
The creature I was looking at specifically was the repair drone in Iron Gods - it has a slam attack and can also fire a net. Assuming that it is firing the net out of some portal on its body (and not throwing it), it would seem that both of these are natural attacks.
Morgause, if this is the same as the Clockwork Servant in the Bestiary 3 then no, you cannot because the net ability has a specific action associated with it (standard).
You may want to copy/paste the relevant ability.
It depends on how the monster's stat block is set up.
If it is setup such as this then no.
Melee claw +7 (1d4+9)
Ranged arrow spike +5
This would be yes:
Melee 2 claws +22 (1d6+8 plus grab), 2 lasers +22 touch (1d10 force/19–20)
Also the robot above which I modified also has this ability:
Combined Arms (Ex)
When taking a full-attack action, a myrmidon can attack with melee and ranged integrated weapons simultaneously.
PS: I did look up your drone robot, and it can't do both. It has to choose one or the other.
As long as they have two guns and two claws, yes. Natural attacks can be full attacked with—just not used in conjunction with a BAB's iteratives.
Okay, now I have a question (because I clearly have no idea what I'm talking about [not the first time]): robots have "integrated weapons," which they "treat as natural attacks and not manufactured weapons attacks, and can’t make iterative attacks with these weapons." Does that mean that, for example, an Annihilator (Inner Sea Bestiary page 43) can use 2 claw attacks and 2 integrated chain gun attacks as the same full-round action?
Not all robots do. If they have the that ability they can use claws and machine guns(insert other ranged weapon as appropriate).