Like many other baby animals born to the same mama, a group of kittens is commonly called a "litter." They can also be called a "kindle," and this term refers specifically to kittens rather than any random group of baby animals. In Old English, "kindling" was a term used for birthing, and this is most likely where the noun originated from. Another seldom-used term for a group of kittens is an "intrigue." While kittens are certainly curious and intriguing creatures, the term more likely became associated with them back when "entanglement" was an accepted synonym for the word. A rowdy group of kittens can definitely be described as an entanglement of fuzzy little bodies.