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.
Mas estavam preocupados porque  ele era sociável, mas estava sozinho, e não queriam pô-lo com outro macaco, porque, como só tinha um braço, não seria capaz  de se defender nem de brincar.