Here's why:
* Size and Breed: Ponies are smaller than horses. While size isn't the sole determinant of lifespan, smaller animals often have faster metabolisms and age more quickly.
* Genetics: Certain horse breeds are known for their longevity, while others have shorter lifespans. This genetic predisposition can affect ponies as well.
* Care and Environment: A healthy diet, proper veterinary care, and a safe living environment play a significant role in the lifespan of any equine, including ponies.
However, some ponies might live longer than some horses due to:
* Hardy Breeds: Certain pony breeds, like the Shetland pony, are known for their robustness and hardiness.
* Individual Health: Just like humans, individual ponies can have varying lifespans depending on their health and genetics.
In general, the average lifespan of a horse is around 25-30 years, while the average lifespan of a pony is around 20-25 years. But these are just averages, and individual animals can live longer or shorter depending on various factors.