Porquillion

Porquillion is a species of four-legged, spiked-covered creature apart of its own family group, the "Sharpshell". Although not properly documented until the studies of the Rescue Corps became known, it was in truth first discovered by Captain Olimar during his expeditions into the planet prior.

Anatomy
The Porquillion is a rotund, stocky animal: its back is covered in four rounded, red-colored skin sections, each one covered with numerous spines. Although appearing heavily armored even without the spikes, the skin covering is actually fairly soft to the touch, and as such make the creature vulnerable without the spikes themselves. It's unclear though if this same texture applies to the rest of the body, though given the nature of the natural protection, it's assumed that the rest of the body shares the soft texture of its armor.

Despite initial appearances, the spikes themselves are actually able to be removed at will by the Porquillion as a means of defense: whenever a potential threat wanders too close, the startled Porquillion will aim a section of spikes at the attacker, and using muscular pressure within its body, launches that section of spikes directly at them. Studies reveal that it is capable of controlling which section of spikes can be launched at a time, thus leaving it with a form of defense even after a section of spikes is gone. These spikes are capable of regrowth, but this process is not only time consuming, but also using a lot of calorie energy.

Diet
Porquillion have a varied diet, described as eating numerous forms of trash and garbage, but also known for eating living beings smaller than itself such as insects. Thanks to the natural process of re-growing its spikes, Porquillion need a lot of food for their size.

Behavior
Under study of Captain Olimar and the Rescue Corps, the Porquillion is described as a fairly skittish creature, known for launching its spikes at even the slightest provocation.