Moth Caterpillars. by Jeffrey S. Pippen | Back to Jeff's Butterfly Page | Back to Jeff's Misc. Thanks to many folks who have helped me ID some of the creatures on this page, including Anurag Agrawal, John & Jane Balaban, Cheri Cameron, Pat Coin, Steve Hall, Sean Hitch, Josh Rose, and Steve & Dean.
Mad as a March hare. To be as mad as a March hare is an English idiomatic phrase derived from the observed antics, said to occur only in the March breeding season of the Hare, genus Lepus.
If you say that someone is barking mad, you mean that they are insane or are acting very strangely. (BRIT). INFORMAL adj v-link ADJ (disapproval) (=bonkers). The builder looked at me as though I was barking mad. mad cow disease. Mad cow disease is a disease which affects the nervous system of cattle and causes death.