The term for a young cat is "kitten." Kittens are born blind and deaf, rely on their mother for warmth and nutrition, and start developing quickly in their early weeks. They begin to open their eyes around one week of age and start to walk and explore their surroundings by three to four weeks. Kittens are known for their playful nature, curiosity, and energy, often engaging in play with their siblings and surroundings, which helps them develop important social and hunting skills as they grow.