* Alcohol: Bears can get drunk and experience alcohol poisoning, which can even lead to death
* Caffeine: Bears can also get caffeine poisoning, which can cause problems with their heart and nervous system
* Salt: Eating too much salt can cause bears to become dehydrated and possibly die
* Mold: Bears can become poisoned if they eat moldy foods
* Some plants: Some plants, such as yew, lily of the valley, and foxglove, are highly toxic to bears
* Human trash: Bears can ingest harmful substances from human trash, such as plastics, metal, and chemicals