immediately open the pet/livestock GUI then scroll to the 2 stray tame dogs, on the first dog click [w] then [trainer] and assign the only trainer. then exit and go to the second dog, click [w] then [trainer] and if you do it quickly enough(once it didnt crash when there was more time between the dogs) the button for the trainer will not have the dwarf and if you click it the game will freeze then crash, you may have to right click to get it to crash.

only tested in ASCII version.

(also for that matter there are several menus in the ascii version that do not have the correct buttons, the barrel/bin count in the stockpile gui does not have graphics although you can click empty space and input the value and increase/decrease the limits. the waterwheel menu does not have any buttons in it, neither does the axle menu.)