Maybe try logging into the gold box on the top right of the screen
(Delete cookies if you cannot log in). Once you're logged in, click "User Panel" and it will ask you to log in again. You should then be able to see a list of your characters. Click "Go home" next to the character that was in The Magic Forest and it will hopefully send that character to Lonely Cave if that is where the character's home was set to. If not, click "Reset Home".
Then you can try to use them again with that character in a default FH map and not a map full of different objects and most likely too many collisions.
If it continues to crash your game you can always switch your rendering system to the one you're not currently using by going to Options\\Video\\Rendering Subsystem and choosing OpenGL or Direct3D9 (choose the one not already selected).
If not, then I reccommend not using the canine animations for a while until the situation is looked into a little more.
Hope this helps you, Etizo~