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.
If a man therefore purge himself from these ... That they may recover themselves out of the snare of the devil, who are taken captive by him at his will. The English-language word snare originated from an Anglo-Saxon word, snear, that meant a string, from a root word meaning to twist.