On the south side of the old bridge, just next to the monkey statue, you'll find this tiny sculpture of 2 mouses next to a poem. Touching the mouses is supposed to bring you fertility. The poem is by Martin Zeiler written in 1632, reads : Why are you staring at me? Haven't you seen the old Monkey of Heidelberg? Look to and fro, There you will find many more of my kind. #heidelberg #germany