Films: Ferocious Planet (2011)
Height/Weight: Twice that of an average rhino.
Summary: There's an infinite amount of possibility when it comes to what might be out there in the multiverse. Worlds within worlds, differences beyond differences, the works. But in this case, the most we got out of it was the place being devoid of human interference, and the wildlife being almost bereft save for one perfect predator.
History: A bunch of rich investors and government officials, as most rich folk do, engaged in a particularly self-indulgent experiment related to seeing alternate dimensions. The plan worked a little too well, as the resulting rip in time-space killed a few and sent the rest into an alternate Earth in which there is forest for miles, the land hasn't been desecrated in the slightest, and the creatures are unlike anything here. But things go south when a small beast gets killed after entering the room, enraging its much larger and bloodthirsty mother. Soon, the stranded humans will have to find a way back before Mama takes out all of them.
Notable Kills: Nothing special.
Final Fate: After many failed attempts, the survivors, all two of them, manage to escape the dimension before mama can take a bite out of them. However, they find that the Earth they've returned to is not quite the same, though it's ambiguous as to whether they made it back to their own Earth or not.
Scariness Factor: 3-It's a rather scary design, at least. This ultra-persistent predator looks like a demonic meat-eating Protoceratops that got ballooned in size and teeth, but that's where it ends. We once again have a monster beguiled by Syfy's cheap CGI standards. You could tell that the idea of anything else being there for the monster to hunt wasn't in the budget.
Trivia: -This film was also known as "The Other Side" and "Alien Gateway".
-Despite being one of the first humans that Mama munches on, John Rhys-Davies was given top billing, probably because of his role in the 1995 TV show "Sliders", which also dealt in alternate dimensions, and even gets a slight reference to itself here.