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;
Animal Sentience (journal) Animal Sentience (journal) Animal Sentience: An Interdisciplinary Journal on Animal Feeling is a multidisciplinary academic journal. Its subject matter, animal sentience, concerns what animals think and feel, and the journal also covers methods through which scientists and scholars can study this and make the information available to the general public. The journal is published by the Institute for Science and Policy of The Humane Society of the United States, and the editor-in-chief is Steven Harnad, founder of the journal "Behavioral and Brain Sciences". "Animal Sentience" launched in 2015. Its first issue appeared in 2016, and was in the news for