A colorful vase(Photo: Courtesy of Alamy)

Domesticated cats have given up most of their wild ways for a cushy life with humans.

One look at their teeth, however, quickly reminds us that felines haven't lost their ability to bite and chew, just like their untamed cousins.

What they do with those teeth can be hazardous to all sorts of household objects -- and even to cats themselves if the nosh item of choice happens to be plastic.

What Could Possibly Cause My Cat to Chew Plastic?

The chewing or eating of any nonfood items -- dirt, electrical cords, carpeting and plastic -- is known as pica. "I occasionally see a cat who likes to chew plastic. Most of them are normal household items, such as milk jug rings, the plastic ends of mini blind cords and straws," explains Dr. Amy Pike, DVM, of Veterinary Behavior Consultations in St. Louis, Mo.

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There are various medical reasons for why a cat would develop pica, including dental disease or gastrointestinal disorders, so Dr. Pike advises cat owners to take their pet to a veterinarian to see if the pica symptoms are related to an underlying medical problem.

"Cats may also chew plastic due to anxiety," says Dr. Pike, noting that it could either be generalized anxiety or a reaction to a lack of environmental enrichment. Other major causes of anxiety that could induce a kitty to chew plastic: Social conflict with other felines in the household or situational stresses, such as storm phobias or separation anxiety.

"If the cat is anxious, there is a benefit to the cat -- it is a coping mechanism that may help to diminish anxiety, much like hair twirling or biting your nails," says Dr. Pike. "If the cause is not anxiety, chewing on plastic may just be something that the cat enjoys doing. However, the dangers include trauma to the gums or other soft tissues in the mouth, as well as obstruction in the GI tract."

How Can I Get My Cat to Stop Munching on Plastic?

If your vet has ruled out medical causes, and determined that anxiety is the root cause of the pica, Dr. Pike suggests enriching your kitty's home life by increasing playtime and adding more visual stimulation with things like cat puzzles and perches.

If the culprit behind the behavior is a social conflict between housemates, talk to your vet about seeing a veterinary behaviorist, who may recommend ways to reduce inter-cat aggression. Pheromones or medications might also help calm an anxious chewer.