Do multiple sources of Constrict stack?

[SangoProduction]

If you obtain the Constrict (https://roll20.net/compendium/pathfinder/Constrict#content)universal monster ability from one source, and then gain it from another, do they overlap? Do they stack?
I would assume not, but I ask just in case.

[Eldonauran]

It would be a fairly uncommon occurrence for that to happen, so we'd have to look at the specific sources in which the ability was gained. Most often, Constrict is used in conjunction with an appendage (or full body for snakes) that is doing the grappling. In those cases, it is unlikely you have multiple different appendages grappling the same creature at the same time.

[Darg]

Constrict is not extra/bonus damage. Unless it says in the description that this is the case, different sources should stack.

[exelsisxax]

It does not stack. You get the higher damage iteration, except as noted above you probably can't get 2 constricts on the same limb.

Think of it this way: if you have grab twice on the same limb, do you get 2 free grapples? no, you get one - the better one if they are distinct.