The difference between Ground squirrel and Prairie dog

Ground squirrel as a noun:

Any of a number of medium-sized squirrel-like borrowing rodents of the tribe Marmotini (i.e., excluding the smaller chipmunks and the larger marmots and prairie dogs).

Ground squirrel as a noun:

Any of the squirrel-like borrowing rodents of the tribes Marmotini and .

Ground squirrel as a noun:

Prairie dog as a noun:

Any of genus Cynomys, small, stout-bodied burrowing rodents with shallow cheek pouches, native to North America and Central America.

Prairie dog as a verb (intransitive, transitive):

To pop up from a hole or similar in a manner that resembles the way a prairie dog pops his head up from his burrow.

Prairie dog as a verb (slang, euphemistic):

To struggle to hold back an involuntary bowel movement.