She normally gets most but not all in her mouth during regualr oral but at times she gets all the way down on it if she lays across the bed with her head hanging over the edge and we ease it in her throat. She did have a bull one time that she got maybe half in her mouth and he forced it the rest of the way, she didn't like that. I have been wanting her to give it another chance but she is unwilling at least right now. To be fair he was nearly a foot long and as big around as a beer can.