Marsh mongoose was created in 1839.

heron, bulrushes, phragmites reeds, yellow-billed ducks, marsh mongoose and giant bullfrogs

The Marsh mongoose eats almost any meat and fruit, making it an eating machine. if you would want it as a pet, you would want to have it live outside, in a large area, the habitat would have to be marsh-like, and with shallow water in some parts. In some parts of Africa, the marsh mongoose is tamed at a young age, and can get very good at being around humans. So you would want the mongoose you got to be young, and it's habitat as much as possible, homelike.

Yes, all types of mongooses can swim. Though the mongoose is primarily a land animal, some species of the mongoose live near the water, and are semiaquatic, and have webbed like feet. The Marsh mongoose, the Ring Tailed mongoose, and the Crab eating mongoose, either eat fish or amphibians in their diets, and part of their food resource are in water (either swamps, marshes, or sea water).

A male mongoose is called a mongoose