1. Mort...is he a baby lemur, or some sort of monkey-offspring? (or possibly a squirrel as Alex thought)
2. The Fossa? I haven't even heard of an animal called a Fossa (or is it a foreign name for a hyena or something?)
Sorry if the question is painfully obvious to some, but my three-year-old loves this film and it bugs me every time we have to watch it.
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"I like to remember things my own way" - Fred Madison, Lost Highway
The Fossa seem to be some kind of predator found in Madagascar....
http://en.wikipedia.org/wiki/Fossa_(animal)
As for Mort, I can only assume that he's a young lemur seeing as he lives with all the other lemurs, although he doesn't look like the ring-tailed species that the other all seem to be.
He does look like a baby bamboo lemur (http://www.telegraph.co.uk/news/graphics/2007/04/11/lemur/l2.jpg). Bamboo lemurs also live on Madagascar... and their young are a lol cuter than ring-tailed lemurs lol!
Hope that helps you!
BG
Mort is an adult mouse lemur
http://en.wikipedia.org/wiki/Madagascar_%282005_film%29#Mort.2C_the_Goodman.27s_Mouse_Lemur
A fossa, or as the movie calls them foosas are portrayed like hyenas, but they are actually kind of half mongoose half cat
http://en.wikipedia.org/wiki/Madagascar_%282005_film%29#The_Foosa
or
http://en.wikipedia.org/wiki/Fossa_%28animal%29