The white-tailed deer is the most common species of deer in North America, with an estimated population of around 30 million. Other common species include the mule deer, the elk, and the caribou. In Europe, the red deer is the most common species, while the fallow deer and the roe deer are also widespread. In Asia, the sika deer and the muntjac are the most common species.
The population of deer has been increasing in many parts of the world due to a number of factors, including habitat loss, hunting restrictions, and climate change. This has led to an increase in conflicts between deer and humans, as deer can damage crops, trees, and gardens. In some areas, deer populations are also a threat to native plant species.
Deer management is a complex issue that involves balancing the needs of deer with the needs of humans. A variety of techniques are used to manage deer populations, including hunting, culling, and contraception.