Sentence:  It [the Picktree brag<!-- -->] came also like a galloway, but more often like a coach horse, and went trotting along the “lonin, afore folks, settin up a great nicker and a whinney every now and then;" and it came frequently like a “<WSD>dickass</WSD>,” and it always stopped at the pond [...] 
Meaning of the word marked with <WSD> tags:  An ass (donkey), a jackass, especially a male ass.