You can't say they didn't try.

After an impressive 115 years together, two "giant turtles" at an Austrian zoo are refusing to share their cage anymore, the Austrian Times reported Friday. (The paper provided no further information about the species of turtle or tortoise in question.)

According to the paper, zoo staff realized something was amiss when Bibi bit off a chunk of her partner's shell. When the attacks continued, Poldi was moved to another cage.

Animal experts even attempted couples' counseling -- feeding the turtles aphrodisiacs and encouraging them to play games together. But so far, efforts have failed to bring the shelled lovers back together.

Turtles aren't the only members of the animal kingdom known to "divorce" their partners. Studies have shown that some birds who mated successfully with a partner one year have "divorced" and moved on with another partner in successive years.

Click through the slideshow below for other strange, but true divorce stories.

10 Weird Divorce Stories See Gallery