Here are some links to the Harry Potter Lexicon's Bestiary pages. Hopefully I will be able to find more on these mystical creatures so I may add on. As always, if you have anything new for me to add or just want to say 'Hi', email me (Esgal)

• A-B 
  • Abominable Snowman
  • Abraxan
  • Aethonon
  • acromantula
  • armadillo
  • Ashwinder
  • Augurey banshee
  • basilisk
  • beetle
  • bicorn
  • Bigfoot
  • Billywig
  • birds
  • Biting Fairy
  • Blast-Ended Skrewt
  • bloodhounds, albino
  • Blood-Sucking Bugbear
  • boarhound
  • boggart
  • boomslang
  • bowtruckle
  • bugbear
  • Bundimun
• C-G
  • cats
  • cockatrice
  • centaur
  • Chameleon Ghoul
  • chimaera
  • Chizpurfle
  • Cornish Pixie
  • Crup
  • Demiguise
  • Diricawl
  • dogs
  • Doxy
  • dragon
  • Dugbog
  • Erkling
  • Erumpent
  • fairy
  • ferret
  • Fire-Crab
  • fish
  • Flesh-Eating Slug
  • Flobberworm
  • Ford Anglia
  • frog
  • furball
  • Fwooper
  • ghoul
  • giant
  • Glumbumble
  • gnome
  • goat
  • goblin
  • Graphorn
  • griffin
  • Grim
  • grindylow
  • Griphook
  • Gytrash
• H-M
  • hag
  • hellhound
  • hinkypunk
  • hippocampus
  • hippogriff
  • horklump
  • horned toad
  • horse, winged
  • House-Elf 
  • human-like creatures
  • imp
  • insects
  • Irish Phoenix
  • Jarvey 
  • Jobberknoll
  • kappa
  • kelpie
  • knarl 
  • kneazle 
  • lacewing fly
  • leech
  • leprechaun 
  • lethifold
  • liondragon
  • lobalug
  • Loch Ness Monster
  • mackled malaclaw 
  • manticore 
  • merpeople
  • merrow
  • moke
  • mooncalf
  • Mosag
  • Mountain Troll
  • mummy
  • murtlap
• N-S
  • Nagini
  • niffler
  • nogtail
  • Norbert
  • nundu
  • occamy
  • owl
  • phoenix
  • pixie
  • plimpy
  • pogrebin
  • porlock
  • puffskein
  • quintaped
  • rabbit
  • ramora
  • rat
  • raven
  • Red Cap
  • re'em
  • runespoor
  • salamander
  • Scabbers
  • sea serpent
  • shrake
  • snails
  • snakes
  • snidget
  • sphinx
  • spiders
  • squid, giant
  • streeler
• T-Z
  • tadfoal
  • tarantula, giant
  • Tenebrus
  • thestral
  • Tibbles, Mr.
  • toads and frogs
  • tortoise
  • Trevor
  • troll
  • Tufty
  • unicorn
  • vampire
  • veela
  • werewolf
  • Winky
  • wood nymph
  • yeti