Roman siege engines BC, and surrounded by Roman fortifications. As was standard siege technique at the time, "ballistae" were placed up in the towers with other soldiers armed with either bows or slings. The onager was a post-classical Roman siege engine, which derived its name from the kicking action of the machine, similar to that of an onager (wild ass). It is a type of catapult that uses torsional pressure, generally from twisted rope, to store energy for the shot. The onager consisted of a frame placed on the ground to whose front end a vertical frame of solid timber was rigidly fixed;
Emotional support animal the appropriateness of the recommendation, and, if necessary, be willing and able to defend the diagnosis and decision to prescribe the animal in court. Emotional support animals are only one type of animal that is used for people with disabilities or similar issues. Other types of animals used by and for people with disabilities include: Emotional support animal An emotional support animal (ESA) or support animal, is a companion animal (pet) that a medical professional says provides some benefit for a person disabled by a mental health condition or emotional disorder. Emotional support animals are typically dogs, but are sometimes