It's normal for cats to lick their own feces, but it can indicate a deficiency in trace elements. It's crucial for owners to supplement their cats' diets with these elements promptly. Prolonged micronutrient deficiency can lead to various health problems in cats. Once this deficiency is addressed, the pica behavior will stop. 
Symptoms of micronutrient deficiency in cats typically include: licking walls, eating soil, eating plastic bags, and even licking their own feces. Owners should pay attention to these signs, as they indicate a micronutrient deficiency. Another symptom is a pale nose; a normal cat's nose is dark brown or pink and has normal moisture. Some cats with micronutrient deficiencies may also experience severe hair loss.
To improve a cat's habit of licking its own feces, owners should pay more attention to its diet. Choose high-quality cat food whenever possible, and you can also cook some chicken breast, fish, or beef for your cat to maintain a balanced diet. Additionally, you can purchase supplements to replenish trace elements and give them to your cat regularly.
