Yes, it is possible to transfer a toon to a different account. You need to e-mail disney at
toontown@disneyonline.com, and tell them your desire to transfer a toon. Disney will require certain information regarding the two accounts, the toon's name, and if the toon in question has any true friends. If you have true friends, the true friend option on the account where the toon will be transferred should be turned on, or else you will lose your true friends. You will also lose your flowers and gag trees that are planted, but you will keep your laff boosts, and your gardening merits. You do, however, need to re-purchase your gardening kit. Just e-mail disney, they will give you all the detailed information that they require. It will take 2 business days to transfer a toon, once you have provided the information that is needed.
I hope this helps. Have a wonderful day.