Estrus is the stage of the reproductive cycle in which the dog can become pregnant; sometimes a dog that is in estrus is said to be in heat or in season. On average, puberty or sexual maturity is reached at about 6 months of age, but this can vary by breed.
A small scale enterprise is a privately owned and operated business, characterized by a small number of employees and low turnover. A small enterprise usually only shares a tiny segment of the market it operates in.
The United States Small Business Administration designates small and medium-scale businesses as SMEs, or small and medium-sized enterprises. The primary metrics used to determine whether a U.S. company is an SME or not is the amount of revenue the company earns per year and the size of its workforce. The North American Industry Classification System creates size standards for SMEs. For example, a soybean farm can earn up to $750,000 per year before it's no longer a SME.