Some species, like the spadefoot toad, cannibalize in response to environmental pressures.

有些动物，比如锄足蟾，因为环境压力吞食自己的同类。

The spadefoot toad is far from the only animal to eat members of its own species as a normal part of its life cycle.

锄足蟾唯一把吞食自己同类以生存作为正常生命周期一部分的动物。