what does it eat?
Their diet consists of almost any creature they are capable of overpowering, often adapt to eating whatever they can find and whenever they can find it because food can be either scarce or abundant
Garter snake
Their diet consists of almost any creature they are capable of overpowering: slugs, earthworms (nightcrawlers, as red wigglers are toxic to garter snakes), leeches, lizards, amphibians (including frog eggs), minnows, and rodents. When living near water, they will eat other aquatic animals. 
what is a loop service? A streetcar circle route how was it planned? Plans to expand the Portland Streetcar east of the Willamette River emerged in July 1997 which state is this in? Oregon who were the first inhabitants on the river you just mentioned? The Kalapuya, the Chinook, and the Clackamas did they have any trade? Yes, fur trade which flora can be found here? Black cottonwood, bigleaf maple,  Douglas fir can you please name some animals that live here? Garter snakes, sturgeon, stickleback who are the descendants of those people you mentioned previously? The Atfalati how was the street car route you mentioned previously funded? By federal funds, the city council, local Improvement District, and a combination of various other local or regional sources who constructed it? Stacy and Witbeck is it still in use? Yes can you please describe the route? It consists of two distinct services: the A Loop, which runs clockwise, and the B Loop, which runs counterclockwise. can you please name the stations? UNANSWERABLE you told me about a snake before, is it poisonous? No, but venomous how does it look? They generally harmless, small to medium-sized snakes belonging to the genus Thamnophis.
wiki:13050026
Garter snake [SEP] Diet
Garter snakes, like all snakes, are carnivorous. Their diet consists of almost any creature they are capable of overpowering: slugs, earthworms (nightcrawlers, as red wigglers are toxic to garter snakes), leeches, lizards, amphibians (including frog eggs), minnows, and rodents. When living near water, they will eat other aquatic animals. The ribbon snake ("Thamnophis sauritus") in particular favors frogs (including tadpoles), readily eating them despite their strong chemical defenses. Food is swallowed whole. Garter snakes often adapt to eating whatever they can find and whenever they can find it because food can be either scarce or abundant. Although they feed mostly on live animals, they will sometimes eat eggs.