Why do cats chew non-food objects?
Play and oral exploration are common in young cats. Persistent pica can also occur with stress, under-stimulation, compulsive behavior, gastrointestinal disease, anemia, or other medical problems. A nutritional deficiency should not be assumed without evidence.
Why string is dangerous
Linear objects can lodge under the tongue or in the stomach while the intestine attempts to move the free end. This can cause the bowel to bunch and potentially cut through intestinal tissue.
How can the home be made safer?
Secure sewing supplies, ribbon, hair ties, rubber bands, plastic bags, cords, and string toys when unsupervised. Provide safe play, food puzzles, chewing alternatives appropriate to cats, and predictable routines.
When behavior treatment is needed
If medical disease and foreign-body risk are addressed but pica persists, a structured environmental and behavior plan may be needed. Punishment can increase stress without eliminating the motivation to chew.