Monkey Business !

I personally wouldn´t recommend a monkey as a pet. They are very hard to tame unless hand reared from birth. They are intelligent, bore easily and can be very destructive. As for outside space, I don´t think there are any in the pet trade that would survive a Madrid winter outside.

Apart from all that, wild caught monkeys can carry diseases, some of which are fatal to humans, and some of our diseases can be fatal to them.