Perhaps one of my favourite moments on my recent trip to Costa Rica was an evening spent conversing with a howler monkey.

From the balcony of our room in Manuel Antonio, a lone male somewhere in the pitch black of night was letting the universe know he was there. Not to be outdone conversationally, I wanted him to know I was around as well, and so I joined in.

I am confident that some of our hotel mates thought the neighbour a little mad, but the invisible howler seemed to be quite animated about the company. Animated enough that the fearless one in our family, my brother with whom I was travelling, finally asked me to cool it, lest we have someone else sharing our room.