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> The modern view of field biologists is that many supposed "cooperative"
> hunters are not actually taking very sophisticated roles, they are just
> all going for the same prey.  The "cooperation" part mainly means that
> they do not attack each other.

> There is no reason to rule out cooperative or social hunting in
> dinosaurs, and indeed there are several strong pieces of evidence in
> favor of it.

    Like what?  There is some evidence for gregarious behavior in
theropods, but how does that insinuate cooperative hunting?
Social behavior in carnivores leading to group mobbing isn't so
unplausible; saying it then follows that they were hunting cooperatively
is at odds with your previous statement.  As noted, that level of
sophistication in predators is pretty rare, and usually found among
unusually brainy birds and mammals.

LN Jeff