Colonel Heeza Liar on the Jump (1917)

Colonel Heeza Liar is a character a bit like Baron Munchausen. Many wild things occur to him in the cartoons and they are meant to be silly entertainment. Here, he gets into a fight with a kangaroo. On the verge of death, he's saved by a quack doctor--who gives him a transfusion of donkey blood! And, as a result, there is a funny lingering after-effect.