rice rat(n = noun.animal) oryzomys palustris - hardy agile rat of grassy marshes of Mexico and the southeastern United States;
is a kind of rat
is a member of genus oryzomys, oryzomys

bandicoot rat, beaver rat, black rat, black rat snake, brown rat, brown rice, cat and rat, chicken and rice, chinchilla rat, chinese fried rice, cotton rat, cultivated rice, damaraland mole rat, desert rat, dusky-footed wood rat, dwarf pocket rat, edgar rice burroughs, elmer leopold rice, elmer rice, florida water rat, fried rice, gym rat, indian rat snake, indian rice, italian rice, jerboa rat, kangaroo rat, marsupial rat, mary ashton rice livermore, mole rat, mountain rice, naked mole rat, norway rat, opossum rat, ord kangaroo rat, pack rat, pocket rat, polished rice, pouched rat, puffed rice, queen mole rat, rat, rat cheese, rat chinchilla, rat kangaroo, rat race, rat snake, rat terrier, rat typhus, red rat snake, rice, rice beer, rice grass, rice paddy, rice paper, rice weevil, roof rat, sand rat, sea rat, sewer rat, sir tim rice, spanish rice, timothy miles bindon rice, trade rat, water rat, water rice, wharf rat, white rice, wild rice, wood rat