Whilst pursuing one of my minor hobbies (the life and times of Leonardo da Vinci) I stumbled upon this drawing done by the great man probably in 1513, intitled 'Studies of cats and other animals.' All well and good - I see several cats, something looking like a lion and perhaps a couple of bears fighting. But what is that thing just below and to the right of the middle of the drawing? I know Leonardo did several drawings of costumes and set pieces for theatre, one of which a large dragon, but he usually labeled his drawings and made various notes about them. But this creature is just inserted in between all the 'regular' animals. Ideas anyone??