Why Do Cats Lick Plastic? Understanding Feline Pica for Plastic — Causes, Risks & Solutions

If you have ever seen a cat obsessively licking a plastic grocery bag, a shower curtain, or a plastic storage bin, you are not alone. This behavior, known as feline pica for plastic, is one of the most commonly reported quirky feline behaviors. A 2020 survey of 1,500 cat...

If you have ever seen a cat obsessively licking a plastic grocery bag, a shower curtain, or a plastic storage bin, you are not alone. This behavior, known as feline pica for plastic, is one of the most commonly reported quirky feline behaviors. A 2020 survey of 1,500 cat owners published in the Journal of Feline Medicine and Surgery found that approximately 15% of domestic cats exhibit some form of pica (eating or licking non-food items), with plastic being the most commonly targeted material — accounting for nearly 40% of all pica cases reported. The behavior is more common in certain breeds, particularly Oriental breeds (Siamese, Burmese, Tonkinese, and their crosses), suggesting a genetic component. But why plastic specifically?

Why Cats Are Attracted to Plastic

1. Texture and Oral Sensation. The most widely accepted explanation is that cats are attracted to the texture of plastic. Many plastics have a slight 'crinkle' feel and a smooth, cool surface that provides a unique oral sensory experience. Cats explore the world through their mouths — kittens explore objects by mouthing them, and adult cats retain this investigative behavior. The specific texture of certain plastics (especially the thin, crinkly plastic of grocery bags and packaging) may mimic the texture of fur, skin, or prey, triggering an oral exploratory response. The sound of the crinkling plastic may also stimulate the cat's auditory system in a way that is inherently interesting.

2. Chemical Attraction — The 'Starch' Theory. Many plastics are manufactured with additives that can be attractive to cats. Some plastic products are coated with stearates (byproducts of stearic acid, a fatty acid derived from animal fats) or cornstarch-based lubricants used in the manufacturing process. Cats may be attracted to the scent of these animal-fat derivatives, which trigger a food-seeking response. This is why some cats are more attracted to certain types of plastic (shopping bags, bread bags, produce bags) than others — the manufacturing additives vary by product type and manufacturer. Some vinyl and PVC products also contain phthalates, which are derived from fatty acids and may carry an animal-fat scent profile.

3. Nutritional Deficiency (The 'Pica Hypothesis'). Pica (the consumption of non-food items) is sometimes associated with nutritional deficiencies in both humans and animals. Cats that lick or eat plastic may be seeking specific minerals, fiber, or fatty acids that are missing from their diet. A 2018 study in the Journal of Veterinary Internal Medicine found that cats with pica had significantly lower serum levels of certain minerals (including zinc and copper) compared to cats without pica. However, the evidence is correlational rather than causal, and most cats with pica do not have measurable nutritional deficiencies. If your cat suddenly develops plastic-licking behavior, a veterinary blood panel to check for nutritional deficiencies is a reasonable first step.

4. Early Weaning and Oral Fixation. Kittens that are weaned too early (before 8 weeks of age) or that were orphaned and hand-reared are significantly more likely to develop pica behaviors as adults. The weaning process is a critical developmental window during which kittens learn to transition from suckling to eating solid food. Kittens weaned before 6-7 weeks may not fully develop the neural pathways that regulate the suckling-to-eating transition, leaving them with an unresolved oral fixation that manifests as licking or chewing non-food items. This is the same mechanism that drives kneading behavior in cats weaned early — the behavior is a displacement of the kitten-nursing drive.

5. Boredom and Stress Relief. Indoor cats, especially those without sufficient environmental enrichment, may develop pica as a stereotypic behavior — a repetitive, self-stimulatory behavior that provides sensory input and emotional regulation. Cats that are left alone for long periods, lack vertical space, or have limited opportunities for play and hunting may redirect their natural exploratory and hunting drives toward plastic items. The behavior is self-reinforcing — the cat finds the plastic licking pleasurable or soothing, which increases the likelihood of repetition. In multi-cat households, plastic-licking may also be a displacement behavior triggered by social stress or territorial conflict.

Risks of Plastic Licking

While occasional plastic licking is not typically dangerous, there are several risks to be aware of:

• Gastrointestinal obstruction: If the cat bites off and swallows pieces of plastic, they can cause a life-threatening intestinal blockage. This is the most serious risk and requires emergency surgery. Signs include vomiting, loss of appetite, lethargy, abdominal pain, and constipation.
• Chemical toxicity: Some plastics contain additives (phthalates, BPA, lead-based stabilizers) that can leach into the cat's system with chronic licking. While acute toxicity from licking is unlikely, chronic exposure may contribute to long-term health issues.
• Choking hazard: Small pieces of plastic can become lodged in the throat or esophagus.
• Dental damage: Chewing hard plastics can cause tooth fractures, especially in older cats with weakened teeth.

How to Stop Plastic Licking

Management strategies focus on eliminating access, addressing underlying causes, and providing alternative outlets:

• Remove all accessible plastic: Store plastic bags, packaging, shower curtains, and plastic containers in closed cabinets. Replace plastic storage bins with metal, glass, or fabric alternatives. Use cloth grocery bags instead of plastic. This is the most effective immediate intervention.
• Provide safe alternatives: Offer the cat safe chew items such as silver vine sticks, cat grass, or dehydrated meat chews. Some cats respond well to ice cubes or frozen treats, which provide a similar cool, smooth texture to plastic.
• Increase environmental enrichment: Add vertical space (cat trees, wall shelves), puzzle feeders, interactive toys, and daily play sessions. A cat with adequate enrichment is less likely to develop stereotypic pica behaviors.
• Address stress: Identify and reduce sources of stress in the cat's environment. Use feline pheromone diffusers (Feliway) in high-traffic areas. Provide multiple hiding spots and perches in multi-cat households.
• Dietary evaluation: Consult your veterinarian about a dietary assessment. A high-quality, species-appropriate diet with adequate fiber, Omega-3 fatty acids, and taurine may reduce pica behavior. Some cats respond well to a diet change or the addition of a nutritional supplement.

If the behavior persists despite environmental management, or if the cat is ingesting plastic (rather than just licking), consult your veterinarian. Medication (such as anti-anxiety medication or anti-obsessional medication) may be appropriate for cats with severe pica that does not respond to environmental modification.

Related Topics

From the Author — Amanda Liu

I've been writing about cat health and behavior since 2018, and I still learn something new every week. My own three cats — Mochi, Luna, and Jasper — are my constant teachers. Luna taught me that cats can learn routines down to the minute (she sits by her food bowl at exactly 6 PM every day). Jasper showed me that even 'aloof' cats crave connection (he follows me from room to room, just to be nearby). And Mochi reminded me that trust is built in small moments — the slow blink across the room, the head bump at 2 AM, the purr that starts the moment I walk in the door. Every article I write is informed by these daily interactions.

Real Case — From Amanda Liu's Experience

When I first adopted Mochi from a rescue, she was terrified of everything — loud noises, sudden movements, even the crinkle of a treat bag. It took six months of patient, consistent work before she'd let me pet her without flinching. The turning point was a slow-blink exchange one evening. I'd read about the 2020 Scientific Reports study on cat slow blinking, and I decided to try it. I sat across the room, blinked slowly, and looked away. She blinked back. That was the moment she decided I was safe. I share this story not because it's unique — it's actually a common experience for rescue cat owners — but because it illustrates how even small, science-backed interactions can transform your relationship with a fearful cat.

References & Further Reading

• ASPCA. Common Dog & Cat Behavior Issues. aspca.org/pet-care
• American Animal Hospital Association (AAHA). Pet Behavior Resources. aaha.org
• Journal of Veterinary Behavior (Elsevier). Clinical Applications and Research. sciencedirect.com
• American Veterinary Society of Animal Behavior (AVSAB). Position Statements & Resources. avsab.org

Citations are provided for educational reference. Content is reviewed periodically but does not replace professional veterinary advice. If your pet shows signs of illness, contact a licensed veterinarian immediately.