feral

那只猫从未被驯服，一生都保持着野性的天性。

The cat was never tamed and kept its ___feral nature all its life.

公园里那群举止粗野的青少年让其他游客感到不安。

The ___feral teenagers in the park made other visitors feel uneasy.

这些野狗曾经是家养宠物，现在却成了城市里的流浪动物。

These ___feral dogs were once pets but now roam the streets as strays.