PUP
Pup is a common informal term for a young dog, and more generally for a young mammal. In everyday speech, people use “pup” as an affectionate alternative to “puppy” when referring to their dog or other juvenile animals. A young dog is usually called a puppy, but many speakers shorten this to “pup” in casual conversation. The term can also be used for other juvenile animals, such as seals, foxes, or wolves, especially when the speaker is familiar with the animal.
Etymology and usage: The word “pup” is a shortened form of “puppy” and has appeared in English
Other meanings: In computing, PUP stands for Potentially Unwanted Program, a classification used by security software
Care and biology: Puppies require nutrition, socialization, veterinary care, and appropriate housing as they grow toward