Looooony Luna: I like Heffalump - from winnie the pooh. hehe - or Tusky, Ivory (it's what tusks are made out of), Stompster, Greyhorn (elephants are grey and their trunks sound like horns), Greyfoot, Roundfoot, Greytusk, Wrinkle (Elephants skin is wrinkly), Stampy (Known for stampedes), Hefty, Bigearm, Wingtusk, Greywing, Winghorn
miss know-it-all: Steadfast -(means loyal), Basenji (the actual name of the egyptian dogs), Prowler, Blackhunt, Terrior, Blackprint, Coldnose, Darkfoot, You could always be Cerbeus, teh three-headed dog form Greek mythology

. To go the carebear route, there is always Loyalheart, the name of the dog in that animation.
Krieltje: HHHMM Jaguars are golden with clustered black spots called rosettes I believe, I also beleive they are night animals and are carnivors.So, let me think - Nocturnal, Carnivore and Spots, and they like trees, and they love water sports. You might say the jaguar is the "strong and silent" type. He's got the second strongest jaw of any land mammal, able to crush even the hardest of turtle shells. And he's not exactly silent, but he doesn't roar like a lion. Snarling and growling are more their style. He likes to fish as well. (Panthera onca -scientific name)
-How about, Nightspot, Meatfreak, Mooncat, Waterstrider (this is actually the name of a bug, but it sounds cool), Rosette, Shydevil, Catjaw, Carnicrush, Jagjaw, Treespeed, Pouncer, Quickpaw or Mooncat. Once again, Carebear analogy - Proudheart, mainly because cats are proud animals. Proudfoot could be good too.
felix_felicis_444: HMM Chamelion, your right they do change color, only when their mood is altered or if they need to blend into their environment to hide, they also have an extendable sticky tongue to catch prey, belong to the lizard family and are coldblooded and lay eggs.
-How about, moodmorph - or morphmood, I really like Crawlter, Sticktong, Longtongue, Coldprey, morphblend, Chammy, Lizzy (From RAMPAGE- if your old enough to remember that video game), Camo (for Camoflouge). Stickprey, Coldtongue, Preyliz. I think Crawlter is my favorite other than Longtongue
Lady Oymre: We know they travel in packs, are mainly night creatures, most like the snow, they smell and hear at an extremely high rate.
-How about Grizzer (actual name of one in safe habitat), Moonbeam is really good, moonhowl, snowfur, snowhowl, snowpack, howlpack, coldnose, Moonsnow, Quickstep, (the name of the wolf from Narnia might work), Nightwolf, Darkwolf, Wolfy (very original), Moonbite, Night-Howler
Hermione_Resilda: A hawk likes to glide more than fly, and I beaver obviously likes to eat trees and lives in a dam. They are very different creatures, but I may be able to congeal them.
HMMM - how about Woodwings, Feathertail, Gnawbeak, Soarswim, Screechcall, Flapjack, Flappat. Out of your choices Flyingwater is the best.
luckyfish: I think Snuffles would work, afterall, only the trio called him that. But you are the second one with that same animagus, so I give Snuffles only because you thought of it first. Definitely not Lassie, and Fluffy will always be the three-headed dog.
Neisha: I like the specificity of PHAROAH Eagle owl. Isis is good, you could also go with, Osiris. But I like Isis the most.
Mjane95: Hoots for and Owl would be too much of a give away, but I think it is cute. I can suggest quickclaw, preyclaw, Nightprey, wingsoar, snowy-wings, Wide-eyes, BUT Hoots is definitely my favorite.
Pixymajik: Wings is good. I could suggest adding to it, like Barewings, or Featherwings or Silverwings.
Razzberry: I know that my suggestions were minimal, but since you like panthers, I offer another. In ancient egypt, the GOd Inubis, Anubis however you like was always portrayed as a black cat that resembles a current panther. So disregard the other, I think Inubis would be the best for you, plus he was a god.
Hoped I helped.
Julianne envy U: That is an great one, but you seem to have doubts. You obviously want to be fast, and cats are good stalkers, as well as pouncers. IfI were to improve on your already fantastic choice, I would go with Pouncer, Quickstep, Blacktail, Swiftpaw, blackpaw, Opal eyes, Lucifer (Cinderella) or Nightstalker. Of course, your Swiftstalker is just fine.