A domestic livestock unit is defined as the continuous confinement of one (1) horse, mule, donkey or other equine; one (1) cow, bull, ox, or other bovine, except bison; three (3) sheep or goats; two (2) llamas; five (5) turkeys, geese, ostriches, emus, or similar animals; or ten (10) chickens, ducks, or other small fowl or rabbits. For the purpose of determining compliance, said definitions shall not include the offspring less than eight (8) months old of any residing animal.