Sika deer only remaining subspecies in the wild. The former exists in fragmented populations of around 300 in southeast China, while the latter is found in a single population of over 400. The feral population is likely to be much higher than the wild, though most of them are descended from domesticated sikas of mixed subspecies. All of the subspecies are present in captivity, but a lack of suitable habitats and government efforts prevent their reintroduction. The Formosan sika deer ("C. n. taioanus") has been extinct in the wild for almost two decades before individuals from zoos were introduced to Kenting National
Animal repellent effective, such as repellent chemical Spray, electronic pet barrier, motion activated sprinkler etc. In Addition, vinegar can be used as organic pet repellent. The ideal repellent is completely specific for the target animal; that is, it drives away the animal that one wishes to repel "without" affecting or harming any other animals or people. One type of animal repellent may be effective for raccoons, while another animal repellent may be more effective for skunks. It can be difficult to design a repellent method that drives away only undesirable animals while having no effect on people or other creatures. Animal repellent