Caster level equals the barghest’s HD

[Pippin]

Hello there.

If a Barghest were to gain new spell-like abilities, would its caster level be treated as its total HD for them too?

Spell-Like Abilities: At will—blink, levitate, misdirection (DC 14), rage (DC 15); 1/day—charm monster (DC 16), crushing despair (DC 16), dimension door. Caster level equals the barghest’s HD.

Shouldn't it be like the Quorbound (SoS p150) with psi-like abilities:

Psi-Like Abilities: Quorbound creatures have the latent ability to tap into the power of Dal Quor. Each quorbound creature has any three of the following psi-like abilities, some of which can be selected only by creatures of certain alignments. Manifester level equals the creature's Hit Dice. Psi-like ability effects manifest as if powered by power points equal to the manifester level (EPH 184).

Thanks!

[Hackulator]

It would depend entirely on how it got those spell-like abilities.

[Pippin]

It would depend entirely on how it got those spell-like abilities.
Are you saying that the CL entirely depends on how it got the SLA (and thus the line in the title is always irrelevant), or are you saying that the answer entirely depends on how it got the SLA?

[Hackulator]

Are you saying that the CL entirely depends on how it got the SLA (and thus the line in the title is always irrelevant), or are you saying that the answer entirely depends on how it got the SLA?

The line in your title applies only to innate spell like abilities of the Barghest. If it was some sort of advanced Barghest which had added innate spell like abilities, they would probably use it's HD. Spell like abilities from any other source would use whatever rules for those spell like abilities were in the mechanic that had granted them. For example, any class which gives spell like abilities would use the whatever mechanics were defined in the class to determine CL, not the line from the Monster Manual Entry.

Example: If the barghest gained levels in warlock, the CL for the SLAs it gained from that class would be its warlock level, not it's HD.

[Pippin]

The line in your title applies only to innate spell like abilities of the Barghest. If it was some sort of advanced Barghest which had added innate spell like abilities, they would probably use it's HD. Spell like abilities from any other source would use whatever rules for those spell like abilities were in the mechanic that had granted them. For example, any class which gives spell like abilities would use the whatever mechanics were defined in the class to determine CL, not the line from the Monster Manual Entry.

Example: If the barghest gained levels in warlock, the CL for the SLAs it gained from that class would be its warlock level, not it's HD.
I see.

So this is different from how Psi-like abilities are ruled, is it not?

[Hackulator]

I see.

So this is different from how Psi-like abilities are ruled, is it not?

No, what makes you think that? The thing you quoted about psi-like abilities is only for that particular type of creature, and only for the psi-like abilities granted by the mechanic being described there.

[BowStreetRunner]

It would depend entirely on how it got those spell-like abilities.
If you have a Quorbound Creature who picks up the Aggressive Mind feat which grants you a psi-like ability, you would use the Manifester level from the feat (1/2 x HD) for the mind thrust or psionic daze granted by the feat and the Manifester level from the template (1 x HD) for all of those psi-like abilities.