They sit in the bulkhead row in front of the person. There's more in this NYT article about miniature horses being used as service animals (including photos):

They sit in the bulkhead row in front of the person. There's more in this NYT article about miniature horses being used as service animals (including photos): https://www.nytimes.com/2019/08/17/travel/mini-horse-service-plane.html https://www.nytimes.com/2019/08/17/travel/mini-horse-service... "For some blind people [...] guide horses serve as a compelling alternative to guide dogs. The animals are mild-mannered and fast learners, with nearly 360-degree vision. They may also offer balance support to individuals with physical disabilities." Also, dogs only live for 8-10 years, while miniature horses live for 35-40 years. They can easily fit in the back seat of a hatchback.