Diamond Dog

 Diamond dogs are sentient canine creatures who live underground. They originated in the deep mountains of East Griffonia, in the Riverlands to be precise, which became known as Diamond Mountains. Thanks to their ability to use claws effectively, they are able to extract resources, and most importantly, can dig tunnels and trenches with ease. However, they lack the magical abilities of ponies, changelings, and griffons.

Lore
Same as griffons and dragons, diamond dogs are known for their endless greed and selfishness. They are obsessed with gemstones, especially diamonds, rubies, emeralds, and crystals. They value their wealth above everything else, and thus their society is traditionally hierarchical where the rich minority rules over the poor majority. Unlike most other civilizations, diamond dogs have wide-scale slavery.

Slavery has existed in diamond dog society for more than a thousand years and still survives to this day. The poorest and weakest diamond dogs are used for dangerous tasks such as mining and warfare, while the richest and strongest ones rule the country, rule the others and enjoy luxurious lives.

Because diamond dogs are proficient miners, they can amass vast riches in their subterranean homes without much outside interference. Their Kings Under the Mountain jealously guard their wealth, accrued by using a large caste of slaves. The magical crystals that they extract are the most valuable wealth they have. Unlike the ponies, who use crystals for scientific and/or militaristic purposes, the dogs use them as "measurement" in everyday lives, such as currency, social status and so on.

Ironpaws
The Ironpaws divisions are good for their high organisation and small bonus to soft attack. Because of their organisation, you can use them as the breakthrough divisions - for their attacks can be sustained longer than most infantry divisions, or you can use them defensively, to hold the line for a long time.

Mining and Industry
Because of their specialty, they can have a decent amount of bonuses about mining and underground construction. With them plus the bonuses from the industrial trees. The combined bonuses are a force to be reckoned with.