'Outnumbered' - 'Evolution'

Jake is doing his biology homework while writing a song. Dad quizzes him about what he is doing. When Jake replies, 'evolution, it's easy' that launches a discussion about where humans and dogs came from. Karen argues that Dogs are much more clever than crows and Jake has read that the squid is very clever which makes Karen think that salamanders are very clever because they can re grow a limb if it gets chopped off. Dad doesn't think that makes them clever and Jake challenges him that it isn't something he could do which makes Lizards more clever than Dad. Natually Dad disputes this theory.