托福口语 Task 4

Today we're going to talk about a fascinating adaptation in the animal kingdom: camouflage. But not just any camouflage—I'm focusing on what we call 'disruptive coloration.' This is when an animal's pattern breaks up its outline, making it harder for predators to recognize it as a whole. The key is that the pattern creates false boundaries, so the predator sees pieces, not the entire animal. Let me give you two classic examples. First, the leopard. Its rosettes—those irregular spots—aren't just for show. When a leopard rests in dappled sunlight, the spots mimic the shadows of leaves. The predator's eye is tricked into seeing patches of light and dark, not a continuous body. Second, consider the zebra. Its bold black-and-white stripes might seem conspicuous, but when zebras stand together in a herd, the stripes merge into a confusing mass. A lion chasing a single zebra struggles to isolate it because the stripes blur the boundaries between individuals. So, disruptive coloration works by breaking up shape, either against the background or within a group, giving the prey a critical advantage.