Equine is defined as any horse, pony, donkey, burro, or mule which is 12 months of age or older, and is issued a current Equine License by the City Department of Animal Services. An animal which is under 12 months of age, and is the offspring of or is unweaned and being nursed by a female equine lawfully kept on the property where said animal is kept, shall not be considered an equine.