Stop the car – a mono perezoso! An animal commonly referred to in Spanish as “mono perezoso” (or “lazy monkey” in English) must certainly be a slow mover. In Panama, I encountered this Three-toed Sloth during my first ever trip abroad, as our crew drove back to the laboratory from a mangrove forest research site. It seemed perfectly content to continue munching away, and show off hanging from just one foot, before his small audience. In other areas sloths are also called “oso perezoso” (meaning “lazy bear” in English). Sloths sleep 15 to 20 hours per day, and generally move at the leisurely speed of one foot per minute. Surprisingly though, Three-toed Sloths are quite good swimmers!