Deer of the UK
One of the highlights of the British wildlife year is the annual deer rut - a testosterone fueled dominance contest between males (known as stags or bucks) of several deer species to control harems of females (does or hinds) as they come into oestrus for mating. Rivalries culminate in loud bellowing and physical confrontations between males using their antlers. These fights are incredibly violent, and many stags are mauled or even killed during this season!
