Pine processionary development, pine processionary caterpillars are highly irritating to the skin. Contact with the hairs of the caterpillar can cause severe rashes (urticaria) and eye irritation. Some individuals may have an allergic reaction to the caterpillar's hairs. 5th stage larvae can eject hairs when threatened or stressed; the hairs, which have the form of harpoons, then penetrate and irritate all areas of exposed skin nearby with an urticating protein. Allergic reactions may follow in susceptible individuals on subsequent exposure to the hairs. The pine processionary is an economic pest in coniferous forests in southern Europe. It is controlled to some extent
My Head Is an Animal Head Is an Animal" on 20 December 2011, after it had been released as a promo to radio stations in the US and Europe in July 2011. The single propelled the band to nationwide popularity in the US, and has so far sold a million copies there. The success of the single in the US led to the band's signing with Universal Music Group, and the single, along with a revised version of "My Head Is an Animal" was released in North America on 3 April 2012. The music video for the song debuted in February 2012. "Dirty Paws" served