You half right..Jake didn't go to another dimension. The last book ended when him, Tobias, and Marco were about to ram Visser Three's Blade ship with their shipThe books ended kind of fukked up.
They "won" but the blond girl who was into gymnastics was killed.
The leader Jake went into depression and went on a mission to destroy the last remaining yearks and was assimilated into some type of inter dimensional being called "The One".
I remember fans were pissed because it left on a cliffhanger. The author even wrote an open letter to the fans pretty much telling them to fukk off.
I also remember a "fan" wrote a very good fan-made finale book that was only available online and fans speculated that KA Applegate wrote it.
KA also had another book series called The Remants which was also quite good but didn't really take off like Animorphs cuz when Animorphs ended Harry Potter was just picking up steam.


 Completely toned down and was NOTHING like the books.
	

 the books 
		

 I mean, they started from as close to the bottom as anything can get! Their world is a shyt stain and they didn't even have eyes/mouths/ears to experience that mess until they took over that other species over there. I never felt so bad for the human race as much as when I was reading Animorphs. They still make my skin crawl.
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 It took all their self – as animorphs– not to eat each other when they were taxxons, and the yerks were raising that race like pitbulls.