In my thesis I deal with the monitoring undesirable forms of horses behaviour in chosen breedings in Jihomoravský region, Pardubický region and Vysočina. To evaluate my thesis I received the necessary data from monitoring of horses with bad habits and by the contact with horses owners or breeders. Research stretched one year on the model of 50 horses. People which are a owners of horses or horses breeders with own stable are the target groups. The age, gendre, breed, time of stay in this stable and character are description here too. Microclima in stable and long stay on the pasture land were took into consideration at assess of results.