这只曾经是家养的狗现在完全野化了，在森林里独自生存。

The once-domestic dog has turned ___feral and now lives alone in the forest.

那只流浪猫眼神凶狠，行为狂野，完全像只野生动物。

The stray cat had a ___feral look in its eyes and behaved like a wild animal.