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.
The snare drum is a two headed instrument: that is it has skins on both sides. Stretched across the bottom skin is a snare, which comprises a number of twisted wires or gut that sit up against the skin, which buzz against the skin when the drum is struck.