【单选题】

Nearly all animals have a good sense of their own bodies, the trait of physical self- awareness. For this reason, animals do not generally bump into things. Horses know how much room they have around them when they move through narrow spaces.

A、horse can run between two trees or around large rocks in a way that clearly shows the horse’s knowledge of its own body size.Animals show self-awareness in how they respond to discomfort.
A、dog, for example, has no trouble knowing where to scratch itself to kill a fle
A、Many animals show self-awareness when they recognize their own reflection. While looking at itself in a mirror, an elephant may move its trunk over different parts of its body.
A、chimpanzee will make faces, look inside its mouth, or stick out its tongue in front of a mirror.
The passage describes all of the following animals as self-awareEXCEPT
A、orses
B．dogs
C．fleas
D．elephants