A group of kittens can be called a litter, kindle, or intrigue. The term "litter" is the most commonly used term for a group of kittens with the same mother, and it comes from the Old French word "litiere," which means bed. "Kindle" refers to the verb "to kindle," which means "to give birth to young". "Intrigue" is another term for a group of kittens, and it may have originated from the word "entanglement".