[FredZarguna]

The bears at Yellowstone were at one time trained to do exactly that. They were fed garbage and came down to the accessible areas in anticipation of being fed by the dumped trash on a nightly basis.

Now the park's policy is the opposite, Bears are mostly kept in managed areas away from people and denied human food and food waste.

Bears are very smart, in fact, I once heard an animal intelligence expert claim that bears and pigs [which are related] are the smartest non-primate species. [She claimed the intelligence of dolphins was highly overrated.] They can be very quickly trained to show themselves to visitors, but the park service doesn't want the liability anymore.

[Jack Hydrazine]

“Bears are very smart, in fact, I once heard an animal intelligence expert claim that bears and pigs [which are related] are the smartest non-primate species.”

And when you hunt feral pigs you have to make sure you have a pistol on the ready after you take one down because they’ve been known to play dead and attack the hunter and kill them.