P.S. If you're like me in yet another respect, and have a hard time picking favorites and putting them in order, just an unordered and unnumbered list of however many favorite villains you have is fine too.
Yet another thing we have in common! I'm definitely gonna have a hard time with top favorites! My obsessions change a lot and my fav villains changes accordingly. Thus, all of this will be unordered!
In the LBT (Although I don't consider most sharpteeth to be villainous, they'll be added as well):
SIERRA!!! (will always be #1!! The order of the rest changes frequently)
Domeheads from the first movie (they were antagonistic to me and certainly villains in my fanfic! ^^)
Ozzy
Thud (RedClaw and Screech too, but not as much as Thud

)
Liopleurodon from the 9th movie
Plated Sharptooth from the 5th movie
The original Sharptooth
The Belly Dragger from the 10th movie
And God Pterano from JitteryDragon's poop, just for the heck of it!!
In non LBT (Oh boy, here's the long list....) :
Venom, The Green Goblin, Carnage, The Lizard, and Doc Oc from the Spider-Man franchise
Rattlesnake Jake from Rango
XD001, aka Shadow Lugia, from Pokemon XD: Gale of Darkness
Arceus from Arceus and the Jewel of Life
Lord Shen from Kung Fu Panda 2
Badrap, Spittor, and Haxx from Extreme Dinosaurs
Cama Zotz and Goth from the Silverwing series (Brutus and Atlas from the cartoon series, which I didn't like as much as the books)
Thumper and Hopper from A Bug's Life
Evil Flippy from Happy Tree Friends
AUTO from WALL-E
Randall Boggs from Monster's Inc
The Anglerfish and Barracuda in Finding Nemo
Nag from Rikki-Tikki-Tavi
Kaa from the Jungle Book
Xenomorphs from the Alien movie series
Carnotaurs from Disney's Dinosaur
Leopard Seals from every penguin movie they're featured in
The Skuas from Happy Feet
The wasps from the Ant Bully
Cufflingk from Valiant
Lance (Falconfly), Gill and Butch(Lurkfish), and Zaga(Silverspider); antagonistic more or less in each of their respective episodes of the Future is Wild cartoon that was based on the documentary
Imperfect (1st form) Cell from Dragonball Z
The many Acrocanthosaurs in Raptor Red (though the deinonychus' were cool too)
Jafar's Cobra Form in Aladdin; that snake stuff was awesome!
Every villainous dragon I know of! Any hardcore dragon for that matter...
Jetsam and Flotsam in The Little Mermaid
Shenzi, Ed, and Banzai from the Lion King
Hades, Panic, and the Hydra monster from Hercules
The Demon Sorcerors and El Chupacabra from Jackie Chan Adventures
Komodo Dragon, the various Crocs and Gators, and the Stoat from the Wild Thornberrys
Davy Jones and the Kraken from Pirates of the Caribbean
Cretaceous and the vultures in Ice Age: The Meltdown
Rudy from Ice Age: Dawn of the Dinosaurs
The Basilisk and Aragog from Harry Potter (I'm not a fan of the series, but regardless how could I not like a giant snake and spider?)
The infamous Freddy Krueger
The Great Animal from the Swan Princess (the actual giant bat creature, not the human form!)
The rogue bear from The Fox and the Hound
Falcon from Stewart Little 2
Imhotep from The Mummy
The Termites in Antz (though not true villains, they were considered enemies)
The 'Mites from the crappy Sci Fi movie Alien Apocalypse
The Martians from War of the Worlds (the book; though I did like the aliens from the most recent movie)
The termites, the slave-makers, and the ant lion from the book Empire of the Ants (again, just antagonistic critters just doing what's natural)
Scroop from Treasure Planet
Viral Cherubimon in Digimon (I like the fourth season one the best)
Diablo from Beverly Hills Chihuahua
Shan Yu from Mulan
Grumpy from Land of the Lost
The witches from Hocus Pocus
The rat and Si and Am from Lady and the Tramp
All the predators of the Jurassic Park movies
The Smokers and Hunters from Left 4 Dead
The Robber Fly from the book Tale of Buster Bumblebee
Bowser and the Koopalings, along with the bad Paratroopas and Hammer Bros. from Mario
I'm sure I'm forgetting some and will add them to the list when I remember...... This isn't even including my numerous OC villains nor the 'predators' of documentaries like:
Dimetrodon from Walking with Monsters; Liopleurodon, Postosuchus, and Allosaurus from Walking with Dinosaurs; and Ambulocetus from Walking with Prehistoric Beasts
The Allosaurus and Nanotyrannus in Jurassic Fight Club (episodes Hunter Becomes Hunted and T-Rex Hunter)
Deathgleaner bat from the Future is Wild (plus the species I've mentioned already)
The Daggerwrist and Skewer from Alien Planet
Dragonfly from Dinosaur Planet: Alpha's Egg
And I bet there's more of
those I forgot to mention too. And those are also just the villains/antagonists/predators I'm obsessed with. The list will just never end!!

What movies are you looking forward to next year?
I never paid much attention to what movies will be coming out

But if its for future movies in general, I'm anxiously waiting for these confirmed movies: Happy Feet 2, Ice Age 4, Jurassic Park 4, and Monsters Inc 2.....though I'm not all too sure how reliable the Jurassic Park confirmation is...