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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)

physical entity go
an entity that has physical existence

object, physical object go
a tangible and visible entity

whole, unit go
an assemblage of parts that is regarded as a single entity

living thing, animate thing go
a living (or once living) entity

organism, being go
a living thing that has (or can develop) the ability to act or function independently

animal, animate being, beast, brute, creature, fauna go
a living organism characterized by voluntary movement

chordate go
any animal of the phylum Chordata having a notochord or spinal column

vertebrate, craniate go
animals having a bony or cartilaginous skeleton with a segmented spinal column and a large brain enclosed in a skull or cranium

reptile, reptilian go
any cold-blooded vertebrate of the class Reptilia including tortoises, turtles, snakes, lizards, alligators, crocodiles, and extinct forms

diapsid, diapsid reptile go
reptile having a pair of openings in the skull behind each eye

snake, serpent, ophidian go
limbless scaly elongate reptile

colubrid snake, colubrid go
mostly harmless temperate-to-tropical terrestrial or arboreal or aquatic snakes

water snake
any of various mostly harmless snakes that live in or near water

noun.animal

3 Subcategories

common water snake, banded water snake, Natrix sipedon, Nerodia sipedon go
in some classifications placed in the genus Nerodia
water moccasin go
any of numerous North American water snakes inhabiting fresh waters
ring snake, grass snake, ringed snake, Natrix natrix go
harmless European snake with a bright yellow collar