The effect of humans encouraging unfiltered consumption has, over many generations, led to significant nasal bloat. Compared to the Yoshis of twenty-some years ago, the Yoshis of today have undergone a transformation that could be described as "reverse pug". Thankfully, the nostrils are smoothly transitioning further down the snout, indicating that breathing and scenting, rather than being upset by the growth, are instead further specializing However, as illustrated by @nicooriia, there is a hidden danger to this development: The loss of visual acuity. It's becoming grim. With the exception of some specimens from handheld climates, nasal bloat has consumed most of the species, with the modern Yoshi (2014 forward) having as much as 83% of its eyesight blocked entirely by its exaggerated nasal structures. While it's clear that eye structure is also expanding and evolving, presumably by way of the rich nutrients, the eyes are complex organs and can't outstrip the monstrous pace of the nasal sac. The best hope is to encourage any mutation towards division of the eyes, towards monocular vision such as you'd see on a horse, or eye stalk/s (it is unclear whether Yoshi eyes are a singular organ, see SonicHowever, we might let nature take its course and find that within long years, the wild Yoshi may simply evolve away from vision as a primary sense, leaving us a star-nosed mole of a species, easily scenting prey. Whatever the case, fucker shouldn't be driving a car
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