I would highly recommend Sam Ivy, and specifically our trainer, Alexis. Our two dogs, Mustard and Pickles, each have their own issues. Mustard has a bite history that wasn't getting better after a couple of years of rewards-based training. Pickles is pretty much afraid of everything, so going on walks and in public is usually a nightmare. After a couple of months with Alexis, both dogs are friendly and well-behaved in the home and in public! We've been able to have guests over with no aggression from Mustard, and take them to the market and out to lunch! Alexis taught us how to take on a strong leader position in the home that's made both our dogs feel comfortable and confident enough that they consistently obey our commands. Highly recommend! Especially if you're dealing with aggression or reactivity issues.