Mammals in general have color vision of a limited type, and usually have red-green color blindness, with only two types of cones. Humans, some primates, and some marsupials see an extended range of colors, but only by comparison with other mammals.
snare (plural snares) 1  A trap made from a loop of wire, string, or leather. ( 2 rare) A mental or psychological trap; usually in the phrase a snare and a delusion. Shakespeare If thou retire, the Dauphin, well appointed, / Stands with the snares of war to tangle thee.
trap (plural traps) 1  A machine or other device designed to catch (and sometimes kill) animals, either by holding them in a container, or by catching hold of part of the body. 2  A trick or arrangement designed to catch someone in a more general sense; a snare. 3  A covering over a hole or opening; a trapdoor.