But they worried, because he was social, that he was lonely, and they didn't want to put him in with another monkey, because they thought with just one arm, he wouldn't be able to defend himself or even play.
飼育員は 社交的なブーンルアが １匹でいるのを心配しましたが 他のサルと一緒だと 腕１本で 自分を守ることも遊ぶことさえも出来ないと判断し