More art from the talented  cybercat, more warnings against the dire effects of transformative maladies! You can view the originals here. The paper texture is from here and the original poster is from here.

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The International Morphological Foundation Presents: KNOW YOUR METAMORPHIC DISORDERS

Entry #C1-133741-1
Name: Acinonyxal Colic
Common Name: Cheetah Cramps
Frequency: Uncommon
Severity Class: 3

Notes:
It's not generally known to the populace at large, but cheetah hormones and DNA have been in the general food supply ever since Major Foods introduced its "Put A Cheetah In Your Soul" promotional campaign for Catspot Crunchies in 1966. The snackmaker, and many others, quickly found that mass-produced cheetah DNA and hormones added a mild spicy kick to the snackfoods and, once the infrastructure was in place, those selfsame manufacturers have been very hesitant to transition to safer additives. Citing prohibitive costs, many snack foods and a surprising number of other products continue to use cheetah genes as flavor, filler, or fixative to this day. Few are labeled, as well.

Generally speaking, this isn't a problem: the preponderance of human hormones and DNA in naturally occurring systems is enough to counteract any ill effects. However, during intense physical activity, the balance of hormones and genetics may be thrown off and, with Catspot Crunchies or similar products in the body, a metamorphic flux may occur. The body, desperate to resolve electrolyte imbalances and other problems resulting from extended, intense exercise, may latch onto the cheetah genetics and incorporate them into the genome, resulting in sudden and intense cramps followed by full metamorphosis. For this reason, any snack food or other food product known to be contaminated with cheetah genetics is strongly contraindicated during lengthy priods of intense exercise.

Case Study:
The model for this poster is one Justina Axon-Bucy, a dedicated runner of quarter marathons, half marathons, marathons, double marathons, and of course marathon marathons (26.22 marathons in a row). Despite her dedication to health and bodily fitness, the consumption of a single package of Catspot Crunchies at a refreshment station led to an acute attack of Cheetah Cramps just as she was about to cross the finish line. Her subsequent cheetamorphosis was captured by photo finish cameras.

Addendum from Agent Ellis, corresponding IMF agent:
Catspot Crunchies would be eligible as war crimes under the Hague and Geneva conventions even if they weren't laced with cheetah DNA. As it stands, the only reason to eat them is if you have a death wish or are convinced you are a member of the Acinonyx genus in a human body. Or perhaps both.