Super Smart Animals
For years, science has assumed humans are smarter than their animal counterparts. But is that really the case? In 2012, Liz and the BBC set out to discover how clever animals really are - and came back with some surprising conclusions. From a skateboarding dog and a chimp who loves maths to a sheepdog rewriting Einstein's famous equation, Liz put herself - and her animal co-stars - through their paces with amazing results.