Endemic to the island of Borneo and southeast Asia, Acromantulas are thought to be a wizard-bred species designed to guard hoards of treasure and homes. They were first sighted on Borneo in 1794, and one was introduced to Scotland in 1942-43 after Rubeus Hagrid acquired Aragog's egg. Some time later a colony was established there after Hagrid gave the fellow Acromantula Mosag as a mate to him, presumably after having her smuggled into Britain like Aragog before her. Acromantulas are covered under the 1965 Ban on Experimental breeding, designed to regulate the growth of wizard-bred creatures, due to their high toxicity, aggressiveness, the inability of wizards to tame it and its taste for human flesh.