As a litter develops and matures, individual personalities will start to blossom. One pup may be very active, grab the toys, jump, run, twist, turn, and tackle the others. Another pup may be sweet, silly, cuddly and playful. It is important to assess a puppy’s temperament- its personality, innate behavior trends and activity level. A good breeder will evaluate (temperament test) each pup and strive to match up the pup with a home that will be a good fit for both.