Hi, my name is Rick, and I am training to become an Operator.
Some time ago, a guy named the Creator designed and came up with a series of robotic suits, in the shape of large animal anthros. These suits were originally created in order to provide the Creator with additional mobility when he lost a couple of his limbs in the war.
A trained Operator climbs inside and is able to pilot them as if they were their own body.
The suits are fully autonomous, and can function and perform tasks on their own, serving as assistants of some sort. Some of them are even used as rescue units in charge of keeping injured people alive.
These suits are also modular, and many of their parts are detachable. Although they are also quite fragile, and can break down if not properly taken care of.
Suits additionally possess artificial intelligence, which can even deceive them into thinking they are organic beings with a free will. This might cause them get unruly, but they can be "tamed" back into serving an Operator.
Anybody can learn to operate these suits, with the help of other trained Operators.
I hope I can be a great Operator one day.

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Man, this came out amazing! I really wanted to showcase the concept  LeafGhost has come up with! He has done an astounding amount of worldbuilding, and I felt like he needed some more attention!

Rick is my very eager fursona!
Art was done by the absolutely awesome  LeafGhost, who also owns the concept of the robot suits, as well as the characters of the Creator and the wolf Operator. Do go and check out his series in his gallery!