A tiny parasite called Toxoplasma gondii can only breed sexually when in the guts of a cat. So when it infects rats, it changes their behavior to make them less scared of cats. (35/53)

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Written by danny

An opera house on the U.S.–Canada border where the stage is in one country and half the audience is in another. (34/53)

A cat piano is known as “The katzenklavier” was a musical instrument made out of cats. It was designed by 17th-century German scholar Athanasius Kircher, it consisted of a row of caged cats with different voice pitches, who could be “played” by a keyboardist. (36/53)