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Can indoor cats grow winter coats? Here’s what to know about feline coat thickness in winter

An indoor cat's winter coat might change some things around the house. Here's what to know

When the temperatures drop in the winter months, there are so many ways to warm up. We can turn up the heat, put on a sweater, or cuddle with a loved one. Cats don’t have those capabilities, though, so they had to evolve to be able to stay warm in the changing temperatures on their own. That’s why felines developed such a special fur coat.

Not only does a cat’s coat change thicknesses throughout the year, but it also helps keep them warm. Even for indoor cats! While inside cats might have the luxury of being in a heated space all winter, it’s important to understand the role their winter coat plays in their comfort, too. The more you know about how cats stay warm, the better you’ll be able to keep your fur baby healthy and comfortable.

Gray longhair cat sitting indoors in a sunny spot

Do cats’ coats thicken in winter? Yes, and here’s why

According to Catsonville Cat Clinic, cats adapt to environmental changes by growing out a thicker coat in the winter. That extra thickness primarily comes from the undercoat, which consists of finer, shorter, and softer hairs. Those hairs grow at a faster rate during the winter to help trap a cat’s body heat. This allows a cat to better regulate their temperature, so they can withstand colder weather.

Since your cat only needs that thicker coat in the winter, he’ll also shed those extra hairs in the spring. You can brush your cat to help remove the loose hair and keep it from spreading around your house.

Himalayan cat lying on a white blanket

What happens when a cat’s winter coat grows in?

Growing a winter coat is a natural response for any cat, even if he lives indoors. In fact, even with a winter coat, your cat may start to spend more time in your home when the cold sets in. The temperature is only one cause of this, though. There’s also less food for your cat to hunt outside in the winter, so he may decide that spending time inside is more enjoyable.

Keep in mind that even with a winter coat, cold outdoor temperatures can be uncomfortable for your cat — especially if he spends a longer period of time outside. Your cat might ask to go outside in cold winter weather, but be prepared to let them in again soon.

Gray cat curled up under a fluffy blanket

Keeping your cat warm in the winter doesn’t have to be difficult

Even though your cat’s winter coat can help them cope with colder temperatures, they’ll still appreciate your efforts to keep your home warm. One easy way to do this is to turn your thermostat up — or at least turn up the heat in the rooms where your cat spends the most time.

You can also make your cat cozy in some sleeping spots throughout your home. If they have windows they prefer, make sure that they’re fully closed, and consider replacing the weatherstripping if it’s getting old. You can always give your cat a nice blanket or cat bed to snuggle into.

You might also want to get your cat some products intended to help keep him warm. Fully enclosed cat beds make for cozy spaces that can help keep drafts out. You’ll also find that some beds are made of self-warming material that reflects your cat’s body heat back at him.

Alternatively, there are plenty of cat beds, blankets, and houses that are heated. These products are electrically powered, so look for one that’s designed to consume minimal energy and that has an energy-saving function. These powered products can get your cat extra warm without requiring you to turn up the heat in your home too much. They’re particularly helpful for cats who are older or who may be stiff in the winter because of arthritis or other aches and pains. Doesn’t that sound cozy?

When the winter weather sets in, your cat’s body will have already been preparing him for the cold – -even if he’s an indoor-only cat. However, you can help him stay comfortable by keeping your house just toasty enough and by giving him warm places to sleep. When your cat inevitably sheds his winter coat in the spring, be ready with a quality brush. You can help prepare him for this by introducing short periods of brushing gradually over the winter. The more actively you brush your cat, the less hair there will be to spread throughout your home. Brushing can also minimize the amount of hair that your cat ingests, helping to prevent hairballs. Good luck!

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Paige Cerulli
Former Digital Trends Contributor
Paige's work has appeared in American Veterinarian, Business Insider, Healthline, and more. When she's not writing, Paige…
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