Personally, i own 1 bull x, she is my first lurcher of this breeding, as a pup she was very easy to train and quick to learn, she has endless stamina, guts and determination. This was her first season and she picked up on her job with ease, after 3 sessions she was like a dog of 6 years old. She's 3/4 grey 1/4 bull. Im not saying she's the best dog on the planet but she has done me proud so far. Bull x's are like marmite, love em or hate em.