I love Duolingo, but they really could use somebody on the staff who understands syllabus design. I've been learning Swedish for three days and can't introduce myself, nor order a coffee, but I know most of the animals in a one-volume encyclopedia (and that the ant likes the spider and the spider drinks water).
I generally agree with you, since I posted this last year http://www.reddit.com/r/duolingo/comments/17d6qt/why_animals_so_early/
However, people seem to love learning animals. I'm now a contributor to the Esperanto course and while we decided to follow the general Duolingo course structure, we decided to limit ourselves to the really most common animals, so we could get on with teaching more important stuff earlier. ;)
Not sure if this is what you ment
Top is 'renen'
Bottom is 'älgen'