Final answer:
A puggle is the result of mating a pug with a beagle, which is an example of selective breeding in animal husbandry. The process is similar to how a poodle and a cocker spaniel are bred to create a cockapoo.
Step-by-step explanation:
A puggle is a type of dog that is first produced by mating a pug with a beagle. This process is an example of selective breeding, which is a method used in animal husbandry to create specific traits in domestic animals. In the case of the puggle, breeders aim to combine the physical features and personality traits of pugs and beagles into a single dog.
Similarly, as referenced in Figure 18.10, the (a) poodle and (b) cocker spaniel can be bred together to produce a breed known as (c) the cockapoo. This is another example of selective breeding, where the goal is to merge the desirable characteristics of the poodle's intelligence and hypoallergenic coat with the temperament of the cocker spaniel.