Name and describe one of the three conditions Dr. Natterson-Horowitz mentions that have been well-studied by veterinarians, who might have insights to provide in diagnosing or treating those conditions in human patients.

One of the conditions that's mentioned by natterson-Horowitz is Fear induced Heart Failiure

in the year of 2000, human cardiologists discovered that there is a very strong connection between our emotional condition and our heart condition. According to the studies, people that have negative emotional condition tend to experience irregular heartbeat and force the heart to work harder than it supposed to be