Is My Dog High? One Problem With Edibles

Photo by Elsa Olofsson

The plant Cannabis sativa is an herbaceous flowering annual that was originally native to central and eastern Asia. It has been cultivated throughout recorded history as a source of fiber for fabric and rope, seed oil, animal feed, and medicine. Evidence exists that some ancient cultures recognized the psychoactive properties of the plant. Burned cannabis seeds have been found in the tombs of shamans in Siberia dated to about 500 BC. At about the same time, the Greek...