Crab-eating mongoose has also been observed on agricultural land near human settlements. Crab-eating mongooses are usually active in the mornings and evenings, and were observed in groups of up to four individuals. They are supposed to be good swimmers, and hunt along the banks of streams and close to water. Despite their common name, their diet consists not only of crabs, but also just about anything else they can catch, including fish, snails, frogs, rodents, birds, reptiles, and insects. "Herpestes urva" is listed in CITES Appendix III. Crab-eating mongoose The crab-eating mongoose ("Herpestes urva") is a mongoose species ranging from the northeastern
Common species because common species shape ecosystems, contribute disproportionately to ecosystem functioning, and can show rapid population declines, conservation should look more closely at how the trade-off between species extinctions and the depletion of populations. Common species Common species and uncommon species are designations used in ecology to describe the population status of a species. Commonness is closely related to abundance. Abundance refers to the frequency with which a species is found in controlled samples; in contrast, species are defined as common or uncommon based on their overall presence in the environment. A species may be locally abundant without being common. However,