Why your dog sleeps on your clothes and what it means, according to experts!

Animal behaviorists point out that the scent of a loved one acts as a powerful neurochemical trigger for dogs. Scientific studies using fMRI brain scans have shown that when a dog is exposed to the familiar scent of their human, the “caudate nucleus”—the reward center of the brain—lights up with activity. This is the same region that responds to positive stimuli like food or play. Therefore, when a dog curls up on your discarded hoodie, they aren’t just looking for a cushion; they are essentially bathing themselves in the scent-equivalent of a warm hug. By surrounding themselves with your odor, they trigger a release of oxytocin and dopamine, creating a state of biological bliss and security.

This behavior becomes particularly pronounced during times of absence or transition. For a dog, the world can be a loud, unpredictable place, and their human serves as their primary source of safety—their “secure base.” When you leave for work or travel, your dog may experience varying degrees of separation anxiety. In your absence, your clothing serves as a transitional object. By seeking out your strongest scent—which is why they almost always favor unwashed gym clothes over freshly laundered ones—they are able to bridge the gap between your departure and your return. The clothing acts as a physical proxy for your presence, providing a comforting anchor that helps them regulate their stress levels.

Beyond the emotional and chemical drivers, there is a fascinating evolutionary component to this habit. In the wild, canines are den animals. They seek out small, enclosed, and familiar spaces to rest, as these environments offer protection from predators and the elements. Within a domestic setting, your “den” is the entire house, but the most sacred spots are those that smell most intensely of the pack leader. By sleeping on your clothes, a dog is effectively marking their spot within the family hierarchy and reinforcing their membership in the pack. It is an instinctual drive to remain close to the source of resources and protection.

The choice of specific items can also be telling. Many owners notice that their dogs prefer clothing that has been recently worn, as the scent is “fresh” and more evocative of the owner’s current state. Some dogs will even go so far as to drag a piece of clothing from a laundry basket to their own bed, creating a curated “nest” of familiar smells. This nesting behavior is a way for the dog to gain control over their environment, surrounding themselves with the sensory evidence of their bond with you. It is a proactive effort to combat loneliness and find tranquility in a human-centric world.

Of course, practical considerations cannot be entirely ignored. Dogs are connoisseurs of comfort, and the textiles we choose for our clothing are often far more luxurious than the average pet bed. From the softness of a cashmere sweater to the broken-in flexibility of a cotton T-clock, our clothes provide an inviting texture that appeals to a dog’s sense of touch. Additionally, clothing acts as an insulator. During cooler months, a pile of clothes can retain residual body heat or simply provide an extra layer of warmth against a drafty floor. The combination of a soft surface and a comforting scent makes a discarded shirt the ultimate “premium” resting spot in the eyes of a canine.

Understanding this behavior allows us to view our pets with a deeper sense of empathy. What might initially seem like a nuisance is actually a silent testament to the depth of the bond they feel for us. It is a reminder that to our dogs, we are the center of their universe. Our very scent is their “happy place,” a source of reassurance that transcends the need for verbal communication. If your dog has a habit of claiming your favorite sweater, they aren’t trying to be difficult; they are simply trying to stay connected to the person they love most in the world.