No, not really. A bear will come just like the other predators but sometimes more aggressive. Some bears will sneak in, so will circle behind me and catch my scent and be gone. Some boars will come charging in throwing caution to the wind. Those are the ones to be ready for. You'll almost always have a frontal shot. Use good bullets. I use a muzzleloader and use Barnes. 290gr T-EZ. It will bust through a shoulder.

Another trick is to use a fawn or calf call and then after a while use a coyote howl. The bear will think a coyote beat it to the fawn/calf and come charging. Be ready.

Also, look for mountain lions. They'll come to a call but are so sneaky you'll hardly ever see them.

Calling isn't recommended to do alone but that's the only way I hunt, so I take the chance. Two hunters back to back is safer.