Otter females are called bitches or sows, and their offspring are called pups. The collective nouns for otters are bevy, family, lodge, romp (being descriptive of their often playful nature) or, when in water, raft. The feces of otters are typically identified by their distinctive aroma, the smell of which has been described as ranging from freshly mown hay to putrefied fish; these are known as spraints. The gestation period in otters is about 60 to 86 days. The newborn pup is cared for by the bitch, dog and older offspring. Bitch otters reach sexual maturity at approximately two years of
Patagonia (mammal) as opposed to earlier forest environments in the region. This coincides with "Patagonia"'s burrowing, grazing habits. A large variety of mammal species are known, including caviomorph rodents such as "Dudumus", as well as the rodent-like argyrolagoidean paucituberculates. "Patagonia" likely avoided competition in its fairly specialised niche. Patagonia (mammal) Patagonia is an extinct genus of non-placental mammal from the Miocene of Argentina. Traditionally considered a metatherian "incertae sedis", more recent analysis have shown it to be a gondwanathere. It is the youngest allothere species known. Currently, a single species is known, "P. peregrina", hailing from the Colhuehuapian-dating deposits of the Sarmiento