African wading rat
The African wading rat or African water rat is a species of rodent in the family Muridae. It is the only species in the genus Colomys. It is native to Africa, where it occurs in Angola, Burundi, Cameroon, Republic of the Congo, Democratic Republic of the Congo, Equatorial Guinea, Ethiopia, Gabon, Kenya, Liberia, Rwanda, South Sudan, Uganda, and Zambia.
An aquatic species, this rat is found in and around streams and pools in rainforest habitat, and sometimes in grassland and savanna regions.