How Big Do Guinea Pigs Get and When Are They Fully Grown?

Adult guinea pigs typically measure between 15 and 21 cm in length and weigh from 0.1 to 0.3 kg. Generally, male guinea pigs are slightly larger than females. A guinea pig's skeletal growth usually ceases around 5 to 7 months of age, marking their adulthood. After this point, they tend to gain weight, which is largely influenced by their diet and care. The lifespan of a guinea pig is generally 3-4 years, although some well-cared-for individuals can live up to 8-10 years.

Guinea pigs, also known as cavies, are native to the Peruvian region of South America. They primarily inhabit rocky slopes, grasslands, and marshes. Their adorable appearance makes them popular pets. Guinea pigs reach sexual maturity relatively early, typically at 2-3 months, but their physical development continues until they are around 5-7 months old. Fully grown guinea pigs usually measure 15-20 cm in length. Newly matured guinea pigs can sometimes be quite thin, so it is important for owners to ensure they eat a balanced diet, allowing them to gain some weight to look their best.

Caring for Adult Guinea Pigs

As guinea pigs mature, they become bolder and their teeth are fully developed. At this point, it's not advisable to use wooden boxes as their enclosures, as they might chew on them to file down their teeth, or even to try and escape. You should choose a sturdy cage, preferably a specially designed guinea pig habitat, to prevent escapes. The enclosure should be lined with wood shavings or sawdust to make it more comfortable for the guinea pig to move around and you should clean and change the bedding regularly.

Guinea pigs are strict herbivores. Their primary diet consists of hay such as alfalfa, timothy, and rye grass. Adult guinea pigs require high-quality hay. They also benefit from timothy hay, which can help prevent urinary calcium issues. Make sure they have an adequate supply of fresh water at all times. To enhance their health, you can offer sunflower seeds, chestnuts, and peanuts occasionally, as these are treats guinea pigs enjoy, and for fruits, consider apples and pears.

Avoid feeding guinea pigs highly irritating foods. Onions and garlic can damage their red blood cells. Spinach, potatoes, leeks, and cabbage can lead to diarrhea, bloating, and digestive problems, and in severe cases, can be toxic.Exclusive offer:Pet Breeds