"If you were chased by a bull and your retreat was cut off on the one hand by a runaway horse, on the other by an express train, what would you do?  Would you reclimb the fence, let the bull do its worst, be run over, or meet death on the line?"  From The Sketch, 1906.

From The Ghost of Brankinshaw by Emily E. Reader, 1887.

From Salt Water Bubbles by John Sherburne Sleeper, 1854.

From Mocca, 1930.

INSTRUCTIONS: Click to change Paul Bunyan's blue ox.

"I don't know where I'm going but I'm on my way," from 1910.

From Fun magazine, 1885.

Truth in advertising — they put the word testing in quotation marks and then symbolically acknowledge that it's a bunch of bull.  From c. 1890.

A cow makes an entrance each night at Mi Vaca y Yo.

"Where is the hersdman?"  From 1880.

From George Meredith: His Life and Friends in Relation to His Work by Stewart Marsh Ellis, 1920.

From Laugh and Grow Wise by Senior Owl, 1856.

Here's an illustration of something to do from What Shall We Do Now? by E. V. Lucas, 1904.