Do horses have more in common with dog or rhinoceroses?

Horses have more in common with rhinos than dogs, despite the obvious differences in appearance. This is because horses and rhinos share a more recent common ancestor and belong to the same order, Perissodactyla, which means "odd-toed ungulates."

Here's a breakdown:

Similarities between horses and rhinos:

* Odd number of toes: Both have one large middle toe that bears the majority of their weight.

* Herbivorous diet: They both feed on grasses and plants.

* Similar digestive systems: They both have a simple stomach and rely on their large intestine for digestion.

* Shared evolutionary history: They evolved from a common ancestor that lived millions of years ago.

Differences between horses and dogs:

* Order: Dogs belong to the order Carnivora, which includes carnivores and omnivores.

* Diet: Dogs are carnivores or omnivores, while horses are strictly herbivores.

* Toes: Dogs have four toes on each foot, while horses have one large toe.

* Digestive system: Dogs have a stomach with a complex structure, while horses have a simple stomach.

While there are some superficial similarities between dogs and horses, such as their social nature and ability to be domesticated, these are largely due to convergent evolution, meaning that they evolved these traits independently due to similar environmental pressures. Their underlying anatomy and evolutionary history place horses much closer to rhinos than dogs.