Deer are non-aggressive so unless provoked Deers will not attack. Headbutt is a Deer's main attack, however, if it's attacker gets too far from it, a Deer will Bullrun, rushing in very quickly. If Charge lands, there is a chance for it to Fracture bones. When fighting a Deer it is best to stay nearby rather than backing off and allowing a Deer the chance to Charge. Deer are immune to Venom Darts.
A Deer carcass will Decay in about 2 days. With the Hideworking Skill learned, Skinning a Deer will yield 1x Raw Deer Hide and by chance, 1x Deer Tick. NOTE: It is important to Skin the carcass first, otherwise the Butchering will ruin the Hide.
With all relevant Butchering Skills learned, butchering a Deer will always yield:
With the Boneworks Skill learned, Deboning a Deer will yield:
There is a chance to get various rare items when Butchering. This chance is much higher with the Viscera & Bits Skill learned.