Red and Fallow Deer still roam freely throughout the Park, just as they did when Henry VIII used to hunt here. There are currently about 320 deer and their grazing is essential to maintain the high wildlife value of the Park's grasslands. Unlike cutting, grazing creates more variation in structure and plant diversity and does not damage the anthills, which add further diversity and character to the grassland. The herds are kept out of the Woodland Gardens and other protected plantations in order to protect the trees and shrubs there. The Red Deer are the largest mammal native to the British Isles and in the summer their coats are glossy red. Fallow deer, introduced by the Romans, are smaller and their summer coats, usually spotted, vary from a cream to darkish brown colour.

Woodlands and parks with Deer such as Richmond Park and Bushy Park, can attract ticks. To familiarise yourself with symptoms and things you can do to prevent tick bites, click here to download a Tick Bites and Lyme Disease leaflet