Bears can make multiple sounds that include roars, grunts and purrs. Like most animals, bears use various noises to communicate among themselves and with other creatures. More »

According to a Chicago Tribune article by the Mayo Clinic, the crunching sound from a knee is called crepitus. Crepitus is caused by the rubbing of cartilage on the surface of the joint or soft tissue around the knee. If... More »

Tigers communicate with a variety of sounds, including a friendly chuff-chuff, a roar to catch the attention of fellow tigers and a hiss or huffing to invite a fight. Unlike some of the big cats like cougars, tigers do n... More »

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Bears can run up to 60 kilometers per hour, which is approximately 37 miles per hour. While there's a common myth that bears are unable to run down hill, they very much can, and their speed is generally considered one of... More »

Elephants make many sounds, including low frequency rumbles, barks, snorts, cries, roars and chirps, according to ElephantVoices. The low-frequency rumble is used most often by elephants. More »

Raccoons have a relatively large vocabulary amounting to about 51 recognized sounds, including adult raccoon purrs, snarls, chatter, squeals, whinnies, growls, hisses and screams and young raccoon twitters, coos, cries a... More »

The bugling sound a bull elk makes sounds like a high pitched scream interspersed with grunts. Some people have described the sound as an eerie, guttural and ghostly singing. More »