I read this novel about 15-20 years ago. I don't remember if it was recent at that time or much older.
It was quite complicated and involved several different threads. But I remember only one of them. There is a planet with vaguely wolf-like predators who are sentient individually, but who can also join their minds telepathically. The "collective mind" that emerges from this joining (not a large group, half-a-dozen minds or so - I am using the tag "hive-mind" but it is a very small "hive") can have a very different personality than the individuals. IIRC, one point-of-view character has a rather nice personality and does not know that she (? I think I remember that was a female, but I am not sure) is part of an extremely unpleasant "collective".