Research Notes - Riolu
Canis aurus

Evolutionarily speaking, Lucario seem to be highly-diverged canids, most closely related to Houndoom. While distinctly bipedal, they do share similar snouts, teeth (though they have curved canines), and ears with other canids. These Pokémon are famous for their ability to harness and detect “aura;” the only other species known to utilize it with any regularity is Medicham. Like the other nebulous forms of energy that Pokémon use, little is known about aura and how it functions. Scientists do know that it functions much like a wave of light or sound, strong “pulses” of it can travel far distances, but the resting aura of most beings only envelops their own bodies. ​

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Diet

Riolu and Lucario are both omnivorous. Nuts and Berries make up a large part of their diets, while small mammals and fish make up the rest. Trained individuals prefer their meat cooked over raw. These Pokémon also have a notable affinity for chocolates like Sweet Hearts.

Care

Both of these Pokémon fare well alongside humans. Since they can not only understand human speech, but also interpret inner thoughts and emotions as well, they can quickly form deep bonds with their trainers. Like most Fighting-types, they spend a lot of their time training in solitude; they dislike being disturbed during this time, but can be very affectionate Pokémon when not busy in practice. ​Lucario in particular can get stressed out when around negative auras.

Caution

These Pokémon rarely ever come into direct conflict with humans. Because they can sense the auras of those around them from a distance, they can detect hostile beings well before they come near. Riolu usually stay away from humans entirely, but Lucario can sometimes appear when they sense distress to help those in danger. Those that mean harm should not approach these Pokémon; Lucario will attack those with malicious auras, defending their loved ones fiercely.

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Behavior

Riolu are amicable Pokémon. They are comfortable around humans and will not give them much trouble. They tend to flee when they sense danger. (0 / -1 / -1)

Lucario are curious Pokémon. They are unafraid of humans and may approach travelers to investigate them. They tend to fight when they sense danger. (1 / 0 / 1)