Some animals are called civets. 

Some animals are called civets. 

Viverrids are a family of small and medium animals. 

These animals have many special parts. They have four or five toes on each foot. Their claws can pull in halfway. Their tongues are rough with sharp prickles. Most species also have a bone in their penis called a baculum.
Viverrids look different from cats. They have longer noses. They also have shorter limbs. Their teeth are not as strong for shearing meat as cat teeth are. A man named John Edward Gray first described them in 1821. Scientists study their DNA to learn how they are related. This helps them group animals together. For example, the fossa was once part of this group. Now, DNA shows it belongs in a different family. The African palm civet also has its own family. It looks like a viverrid but is not one.
Viverrids are a family of small to medium-sized mammals. 
These animals have many unique body parts. They have four or five toes on each foot. Their claws are half-retractile, which means they can pull in halfway. 
People have been studying these animals for a long time. John Edward Gray first named and described the family in 1821. He said the family included groups like Viverra and Genetta. Later, a scientist named Reginald Innes Pocock changed how we group them. He looked at their feet and special scent glands. These glands come from the skin. He added many more groups to the family. This helped scientists organize the many different kinds of viverrids.
There are 14 genera and 33 species in this family. 

Learning about viverrids helps us understand how life changes. Scientists use DNA analysis to check these connections. They looked at 29 different species to study them. 
Viverridae is a family of small to medium-sized mammals. These animals belong to the suborder Feliformia, which means they are cat-like. The family includes 14 different genera and 33 distinct species. Viverrids are very important to biology because they are the most primitive feliforms. This means they are less specialized than modern cats, or the Felidae family. 
Physically, viverrids have several unique traits that distinguish them from true cats. They possess a longer muzzle and a tuft of facial vibrissae, which are whiskers, between the lower jaw bones. Their limbs are shorter than those of cats. On their feet, they have four or five toes, and their hind feet have five toes with the first digit present. Their claws are described as half-retractile. 
Scientists classify these animals into several different subfamilies. The subfamily Genettinae includes animals known as genets and oyans. The subfamily Viverrinae contains the animals commonly called civets. 

The history of studying Viverridae began in the early 19th century. John Edward Gray first named and described the family in 1821. At that time, he defined the family using the genera Viverra, Genetta, Herpestes, and Suricata. Later, Reginald Innes Pocock redefined the family to include many more highly diversified genera. He organized them into subfamilies based on scent glands and foot structure. In 1833, Edward Turner Bennett described the Malagasy fossa and placed it within Viverridae. However, scientific understanding of these animals has changed over time through new technology.
Modern science uses DNA analysis to correct older classifications. While the fossa was once considered a viverrid, molecular and morphological analysis suggests it belongs to the Eupleridae family. 

Some species within the family show very specific evolutionary paths. For instance, the genus Prionodon is considered the sister group to the Felidae family. Because of this close relationship, some scientists have proposed placing the Asiatic linsangs into their own family, Prionodontidae. 
Understanding Viverridae provides a window into the broader system of mammalian evolution. By studying their primitive traits, scientists can understand the ancestors of more specialized predators. The dental formula of a viverrid is a key piece of evidence. Their typical formula is I 6/3, C 1/1, P 3/2, M 3/3, though the number of teeth can sometimes be reduced. Their carnassial teeth, which are used for shearing flesh, are less developed than those in other feliforms. This lack of specialization is a major reason why they are considered a primitive family. Every detail, from the position of the postpalatine foramina in the skull to the texture of the tongue, helps tell the story of their place in the natural world.
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