Meanings of little jackass in English

Yes, the humble little jackass is really an adventitious circumstance.

One of the boys was white, one of the boys was brown, and the little jackass was gray.

That string of thirty-seven and one-half feet of firecrackers was not going to leave the tail of that little jackass except under most extraordinary circumstances.

The date of the day on which the little boys and the little jackass were out there together was July 3, 1897.

And then there's the Burro Mountains, which is half again as high as Baldy, and all the Burro country to Little Jackass.