The dangers of bear panhandling don't come from leaving tuna sandwiches out in the sun. Bears that engage in panhandling are easy targets for poachers, are more likely to be hit by cars and are more aggressive. They may also eat plastic or other garbage that could create digestive problems.
When bears start to associate people with easy-to-get food, they lose their instinctive fear of humans. Bears that aren't afraid of people are more likely to initiate an attack and show other aggressive behaviors. Many bears will raid homes and campsites in search of food. One man was attacked in his camping tent after a bear got a whiff of some fried chicken remnants on his arm from a meal he had prepared earlier in the day [source: Appalachian Bear Rescue].
While such behavior is obviously a problem for people, it's also problematic for the animal since many aggressive or so-called "nuisance" bears must be euthanized. Alternatively, startled homeowners or campers have killed bears that have broken into their property in self-defense [source: Appalachian Bear Rescue].
Bears become easy targets for poachers because they lose their fear of humans. Panhandling bears are more visible during the daytime and are so intent on finding food, they don’t anticipate humans presenting any danger.
In addition to being more visible, bears looking for handouts are also frequent visitors to highly populated areas, which raises their chances of getting hit by a car [source: Appalachian Bear Rescue]. Needless to say, drivers don't anticipate hulking bears around every turn, and when a 350-pound (159-kilogram) mass of flesh and fur instantly appears straddling the yellow line, there's not much a person can do but hope the brakes kick in on time.
Finally, when bears rummage through the garbage for a tasty treat, it goes without saying that they swallow more than just food. Any plastic, aluminum foil or other packaging mixed in with the tempting morsels could get eaten as well. Rangers and researchers often find bits of plastic and aluminum in the feces of those bears caught digging through dumpsters. An otherwise healthy bear found dead by a dumpster near the Great Smoky Mountains National Park was the likely victim of digestive problems caused by eating trash [source: Appalachian Bear Rescue].
Yogi Bear and Boo Boo may have been able to get away with it, but in real life, panhandling causes way more problems than just missing picnic baskets.