Roe Deer(m)
Capreolus capreolus.
Head to body length: 95-135cm.
Shoulder height: male 64-67cm; female 63-67cm.
Weight: 16-35kg at birth: 1, 3 - 2,3kg.
Food: browser eating bramble, rose, herbs, young leaves of trees, conifers and meechmarst, acorns and fungi in the autumn.

Fallow Deer
Dama dama. 
Introduced.
Ashdown Forest East Sussex.
Head to body length: 130-170cm.
Shoulder height: 85-110cm.
Weight: buck 46-80kg; doe 53-52kg; at birth mean: 4.5kg.
Food: grazers eating grasses, rushes, young leaves, acorns, beechmast and berries.

Red Deer (m)
Cervus elaphus.
Head to body length: 165-260cm.
Male c.200cm; female c. 180cm.
Weight: males up to 255kg; females 150kg.
These figures can vary with habitat and captive animals attain greater sizes.
Food: Tree shots, bark, grasses, sedges, heather, conifers and holly.

Grey Squirrel
 Sciurus carolinensis                  

Red Fox
Vulpes vulpes.
Head to body length UK average: male 67cm, female 63cm. Weight: male 6.7 kg; female 5.4kg; at birth 100g.
The Red Fox is the most wide spread carnivore in the world, occurring throughout the entire northern hemisphere. It has also been introduced to Australia.
Food opportunistic: small mammals, birds, insects, eggs, worms, carrion, fruit, and house hold scraps. Daily food requirements around 500g (120kcal). Stores food in time of plenty.

Roe Deer
Capreolus capreolus
Tilgate Forest West Sussex.