Human beings are a species of mammals (哺乳动物).
出自-2010年12月阅读原文
Large mammals once wandered the volcano's slopes, but today, foxes, wild cats, rabbits and mice are more common.
2019年6月四级真题（第二套）听力 Section C
Some of those small mammals help to sustain such big birds as golden eagles.
2019年6月四级真题（第二套）听力 Section C
In last week's lecture, we discussed the characteristics of the newly born offspring of several mammals.
2019年12月六级真题（第一套）听力 Section C
Penguins, like other seabirds and marine mammals, occupy higher levels in the food chain and they are what we call bio-indicators of their ecosystems.
2019年12月六级真题（第三套）阅读 Section C
You probably remember that human infants are less developed physically than other mammals of the same age.
2019年12月六级真题（第一套）听力 Section C
Among mammals alone, the number of, nocturnal species is astonishing.
2015年高考英语浙江卷 阅读理解 阅读C 原文
Mammals weighing sixty kilograms have an average brain size of 200 cm2.
2019年高考英语江苏卷 阅读理解 任务型阅读 原文