Cats are often seen as calm, cuddly companions—but not all breeds fit that mold. Individual temperament varies, however, certain cat breeds have reputations for being more aggressive than others. From biting to territorial behavior, here are 10 cat breeds that can be surprisingly aggressive.
Siamese

Siamese cats are highly intelligent and vocal—but they’re also known for their fiery temper. If they feel ignored or overstimulated, they may lash out with biting or scratching. According to veterinarians, their strong bonds with humans can lead to possessiveness and defensive behavior.
Bengal

With wild ancestry from the Asian leopard cat, Bengals are energetic and bold. While stunning to look at, their high prey drive and territorial instincts can make them aggressive, especially toward other pets. Improper socialization often increases their likelihood of aggressive episodes.
Sphynx

Despite their affectionate side, Sphynx cats can exhibit aggression when they’re overstimulated or uncomfortable. Their sensitive skin makes them more reactive to touch, and their extroverted personality means they may lash out when they don’t get the attention they demand.
Scottish Fold

Scottish Folds are known for their sweet, quiet demeanor—but they can be unexpectedly aggressive when they feel insecure. A 2021 study published in Scientific Reports noted that this breed exhibited higher levels of fear and aggression toward strangers compared to others.
Turkish Van

Often called the “swimming cat,” the Turkish Van is playful and independent—but also prone to aggression when their boundaries are crossed. They dislike being held and may become nippy or scratchy if handled too much. Early training is key to managing their temper.
Savannah

Savannah cats, a cross between domestic cats and servals, are bold, athletic, and can be territorial. Their wild lineage contributes to a tendency for aggressive play and fear-based lashing out. Without proper training and enrichment, their behavior can become difficult to manage.
Egyptian Mau

Egyptian Maus are one of the fastest domestic cats—and sometimes one of the feistiest. Known for being loyal to one person, they may be standoffish or even aggressive toward strangers. Their territorial nature can also lead to hostility toward other cats in the home.
Korat

Korat cats are rare and beautiful, but also sensitive and intense. If startled or overwhelmed, they may react aggressively rather than flee. They form tight bonds with their humans and may show jealous or possessive behavior if they feel replaced or ignored.
Chartreux

This French breed may appear calm and quiet, but it can have a short fuse—especially with children or other animals. If a Chartreux is annoyed, it may hiss or strike without much warning. They do best in peaceful, predictable environments with respectful handling.
Pixiebob

Pixiebobs are rugged-looking and often compared to wildcats, and while they can be affectionate, they also have a tendency to dominate. Aggression can surface during play or when they feel their territory is threatened. Their strength means those outbursts can be intense.
- Please Note: This content was created with the assistance of AI and thoroughly edited by a human before publishing.