👉 Crotalids are a group of animals that include the smallest vertebrates, or invertebrates. They belong to the order Cricetidae and are characterized by having a single head with two pairs of arms (legs) on each side, as well as a pair of wings. This structure allows them to fly very quickly, which is crucial for their ability to navigate through water and air. Crotalids are also known for their ability to swim efficiently in water. They have