About K-904

Positive reinforcement training from Keystone Heights

K-904 is a positive reinforcement dog training service based in Keystone Heights, serving the Jacksonville and Gainesville area by appointment. Owner Jamie Villalon Thieroff is a Certified Professional Dog Trainer (CPDT-KA), certified through the CPDT in 2019, and K-904 was named Best Dog Trainer by Jacksonville Magazine in both 2024 and 2025. Jamie describes her training as ethical and force-free, built on trust, communication and clarity, and focused on calm, functional behavior at home.

Programs and rates

Training covers puppies (potty and crate training, chewing, nipping, routines and obedience), adolescent dogs (ignoring cues, jumping, leash pulling) and multi-dog homes. The one-hour Assessment is $150, the Perfect Bundle of 3 sessions is $400 and the Complete Bundle of 6 sessions is $850. Topics include house manners, recall, place, leave it, emergency recall and leash manners, with field trips possible. Travel outside Keystone Heights costs $25 to $50 on a sliding scale, and a free phone consultation comes first.

What owners say

One client wrote, "Not only did she train our puppy, she trained his owners."