There is no one definitive answer to this question. Some tips on how to get your Pitbull to release toys may include:- Encouraging your Pitbull to play with toys regularly. This will help him to develop positive reinforcement skills, and will also help to reduce his need for toy release.- Making sure that toys are of good quality and that they are not too large or small for your Pitbull to handle.- Making sure that the toys are stored in a safe and secure place.