The following are a number of pages with my thoughts on the characters, with a bit of trivia, a bit of information and interpretation from the book, and explanations of why I made them the animals I did.

Dracula - Undead Transylvanian warlord - a wolf.
Jonathan Harker - Young solicitor - a coyote.
Mina Murray - Assistant schoolmistress and Jonathan's fiancee - a lynx.
Lucy Westenra - Wealthy young woman and Mina's best friend - a mouse.
Dr. Jack Seward - A doctor, running a private asylum - a skunk.
Arthur Holmwood - Son of Lord Goddalming and Lucy's sweetheart - a ferret.
Quincy P. Morris - An American friend of Jack and Arthur's - a hound.
R. M. Renfield - Curious lunitic under Dr. Seward's care - a rat.
Professor Abraham van Helsing - A specialist in rare diseases - a raccoon.