He knew something was odd about that collar he found, but something about it pulled him in. As it clipped around his neck a fire stroked between his legs, a heat spreading though him form his crotch. In mere moments, he felt his underwear bulging out as a large wet spot formed, soaking his crotch in a thick cum like goo. He needs to get help now, running quickly out of the forest, trying to ignore the pleasure each step caused. Unaware of the fat spade rubbing together with each step, or the fact he was now nude. Finally seeing that he's out of the forest. He stopped to take a breather, the goo pudding quickly around his feet, changing them into paw, the goo slowly crawling up him.