This movie was offered up as a Jaws clone but the actual story was written long before. Tweaking the movie to fit the Jaws theme seems to have made some unfortunate changes.
First we have a sub plot introduced when we first meet Joan McCall. Her character is a photographer and the daughter of the owner of a fine restaurant. The subplot involves the restaurant being on the verge of bankruptcy but it is dropped right after it is introduced.
Another scene is where a radio announcer's voice is heard issuing warnings about a killer bear and that backpackers are urged to leave the area. During the voice over we see a large group of backpackers running through the trees as if they were listening to the broadcast.
Unlike Jaws, which takes place in Amity, we have a nameless location for this movie. The entrance to the park merely says, "National Park Entrance".
The basis of the story is a little silly, that of a prehistoric grizzly (15 feet tall) getting a taste for people. An 11-foot modern grizzly was filmed for the movie, so there really was no reason to allude to a prehistoric origin. A 15-foot modern grizzly would have been just as scary.
So we have a big grizzly stalking territory not known for grizzlies (great whites have frequented the area where Jaws takes place). The park staff, only a small handful for a few million acres, has to stop the bear while management is worried about bad publicity.
In the end, rifles are apparently useless in stopping the beast so other, more Jaws-like, methods are used.
There is some nice forest footage and some of the tension is well done, but the characters seem to be lacking in emotion. For example, the second victim stumbles on the first just as she is killed. She looks for a few seconds then turns and runs. She makes no sound and exhibits no real terror, horror or even fear. Not very realistic.
This movie could have been done a lot better but it still works at some levels.