I have a original/print of dogs dressed as humans urinating up a wall and cat peeing over dogs with a caption on wall 'mort aux chats' signed bottom right hand corner - has anyone got any information about this lithograph

Boris O'Klein - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Boris_O'Klein)

I also have a signed print of the same picture. I would like to sell it do we know the value of it?

Take a look at this link, it's the first one on the left, (named eternal enemies)Boris_O'Klein_Naughty_Peeing_Dogs (http://www.oaktreevintage.com/art/boris_o'klein/naughty_dogs_prints.htm)
Here's another link, quite a difference in pricing...
http://www.etsy.com/listing/158528655/boris-oklein-naughty-dogs-etching