I have about 23 characters on my main account, not including another 15 or so on my LucidSilver account (which is used solely for roleplaying purposes). Out of this bunch, my most commonly used are Allegra, followed closely by Strawbluey and Cosmos, all three being wolves. I also run around on two of my lions (Linger and Goldaline) pretty frequently, frequently as well.
So... 5 out of 38. XD However, the ones I do keep around are the ones I really loved. <3