A guinea pig squeaks for a variety of reasons, the main ones being excitement and anticipation. This type of squeaking, also known as wheeking, typically occurs when the guinea pig is hungry or knows that it is about to ... More »

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Guinea pigs are relatively vocal animals and use squeaking as a way to communicate emotions such as fear and happiness, according to About.com. Not only do guinea pigs squeak to communicate with other guinea pigs, but al... More »

When guinea pigs run back and forth across their cage and jump up and down repeatedly, it is because they are happy. This behavior is known as popcorning, because it resembles the motion of popcorn when it is popped. More »

A male Guinea pig is often referred to as a boar. By gently pressing on the abdomen of a male Guinea pig near the genitalia, a small penis will emerge that allows you to determine the sex of your pig. More »

Although initial signs of pregnancy are difficult to detect, Loving Your Pet explains that pregnant guinea pigs drink more water and grow larger; however, pregnancy cannot be confirmed until the latter stages when her yo... More »

One can determine if a guinea pig wants to mate by observing its behavior alone and in the presence of the opposite sex. Female guinea pigs may act restless and anxious when mating season arrives. The male guinea pig typ... More »

According to PetMD, one of the most common causes for hair loss in guinea pigs is barbering, an instinctual behavior in which guinea pigs chew off their own hair or the hair of other guinea pigs during conflict. Female g... More »