Horton was an awesome movie...but that's for another topic.
I saw the trailer when, hey, seeing Horton, and thought to myself, "Waaiittt a sec..."
I could have sworn in the first one that the ice age ended and something like 10,000 years passed or less, meaning Manny and his pack would be dead... then the 2nd one came out.
If they dont add the female mamoth in the 3rd one (Ellie was it?) I'll be sad...what a way to drop a character.