How Big Do American Guinea Pigs Get?

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In the wild guinea pigs can grow to be as large as 20 inches long.

However the average adult American guinea pig only grows to be about 10 inches long.

This is because most American guinea pigs are bred to be smaller than their wild counterparts.

The size of a guinea pig can depend on a few different factors.

The first is the breed.

There are three main types of guinea pigs that are commonly bred in the United States: the English the American and the Abyssinian.

The English guinea pigs are the largest of the three with an average adult size of 12 inches.

The American guinea pigs are slightly smaller with an average adult size of 10 inches.

The Abyssinian guinea pigs are the smallest of the three with an average adult size of 8 inches.

The second factor that can affect the size of a guinea pig is the diet.

A guinea pig that is fed a high-quality diet with plenty of fresh vegetables and hay will tend to be larger than a guinea pig that is fed a diet of pellets and processed foods.

The third factor that can affect the size of a guinea pig is the amount of exercise that the guinea pig gets.

A guinea pig that is active and has plenty of room to run and play will tend to be larger than a guinea pig that is inactive and confined to a small cage.

So how big do American guinea pigs get? The answer is that it depends on the individual guinea pig.

Some guinea pigs will grow to be 12 inches long while others will only grow to be 8 inches long.

The best way to determine how big your guinea pig will get is to ask your veterinarian or breeder.