Sidon

Rhydon is a large, gray, bipedal Pokémon with features similar to both dinosaurs and rhinoceroses. It has narrow, red eyes and two fangs in its upper jaw. On the tip of Rhydon's snout is a cream-colored horn, which is smaller on a female than on a male. There are several other spikes and projections on its head: on top is a spike that curves forward, two triangular points resembling ears on the sides, a wide, wavy crest under each ear, and spiky ridges on each cheek. It has a cream-colored abdomen divided into strips by thin divots. A rocky plate on its chest slightly overlaps its abdomen. There is a row of spikes down its back and they have a long tail with thin, black stripes.

Rhydon is a physically powerful Pokémon. It is recorded as being able to topple buildings with a sweeping blow of its tail, and its horn can bore through solid rock and shatter diamonds. Rhydon sharpens their horns by clashing them together. Its armor-like hide protects it from heat and physical blows. It is stated to be capable of passing unscathed through streams of magma (3,600 degrees Fahrenheit) and withstanding a direct blow from a cannonball without being harmed. However, because of this tough hide, it is insensitive. Despite its well-developed brain, it can be forgetful. Rhydon lives in rough terrain like in caves or on top of mountains. Due to its Evolution allowing it to walk on two legs, it can claim a larger territory that what Rhyhorn was capable of.

Evolution
Rhydon evolves from Rhyhorn and evolves into Rhyperior.

(Source: Bulbapedia)