Sika deer of the buck; strong, prime bucks may hold up to . Territories are marked with a series of shallow pits or "scrapes", into which the males urinate and from which emanates a strong, musky odor. Fights between rival males are sometimes fierce and long, and may even be fatal. The gestation period lasts for 7 months. Hinds (does) give birth to a single fawn, weighing , which is nursed for up to 10 months. The fawn becomes independent 10 to 12 months after birth, and attains sexual maturity at 16 to 18 months in both sexes. The sika deer may
Service animal Service animals can be of many species and come in many sizes. Dogs, cats, dolphins, miniature horses, monkeys, ducks, ferrets, and parrots have all been trained to perform specific duties of a service animal, though the type of animal that may be registered as a "service animal" may vary depending on legal definitions. The people that can qualify for a service animal can have a range of physical and/or mental disabilities. A "guide animal" is an animal specifically trained to assist visually impaired persons to navigate in public. These animals may be trained to open doors, recognize traffic signals, guide