In Sonic Unleashed, I was always confused as to why exactly the Werehog looks so odd, and why he's able to stretch his arms. Then it occured to me when replaying Sonic Battle: he's not a wolf at all, he's a sea creature. His body, nose in particular, takes the shape of a shark and his arms can flail about like octopus tentacles. Chaos transforms into sea creatures when exposed to the NEGATIVE energy of the Chaos emeralds, why shouldn't Sonic also? - Not a troper, but was sitting in front of a fridge.
Would've worked, if not for the fact that the Werehog isn't the result of the negative energies of the Emeralds. It's rather that during the blast that woke up Dark Gaia, part of the Eldritch Abomination shot back up to the satellite and infected Sonic. So, with that logic, his body was rather possessed by Dark Gaia, hench why the form only appears at night, has the ability to stretch arms(I seen the other creatures do it), and since he's an anamorphic creature, it can pretty much justified why it affected him differently than the humans affected by it. If you're wondering how he retains his mind, think Kingdom Hearts. Following the earlier would make ever more fridge logic on how he breathe on land, and have fur.
Because werehog only made him gain traits, not lose them. He already had hair and lungs and genitals and stamina.
Actually, I thought of a better way to explain this. When Sonic absorbs the negative energies of the Chaos Emeralds, he gains stretchy limbs, super strength, a loss of speed (but retains his aerial agility), his attacks glow, and he gets a shark-like mouth of teeth. Chaos gets these same abilities when absorbing negative energies from the Chaos Emeralds. Sonic isn't a Werehog at all, he's simply becoming one with Chaos. Why only at night? No fuckin' clue.
Sonic was transformed into the Werehog via a combination of both the negative energy of the Chaos Emeralds and Dark Gaia's force. Since Dark Gaia is active only in the dark, Sonic would have the same restriction.
Related to Sonic Unleashed, in the PS 360 version, if you pause the game in one of the hubs, everything freezes in place except for Chip. Why? Because Chip is Light Gaia; a god. You merely pressing the pause button is not enough to freeze him in place.
It's a lot less noticeable, but neither does Sonic. He'll just be standing in place but he still has really slight movements when you pause the game. Could this be because he's the fastest thing alive?
Another realization that I've just had from Sonic Unleashed: Why couldn't Dark Gaia just have taken Sonic's power away from the start? Even as he was awakening, he should still have enough energy to siphon away his energy from Sonic, if he had the energy to summon minions the size of towers. Answer: He couldn't, even if he had tried. Since the Werehog was formed by a combination of both the negative energy of the Emeralds and Dark Gaia's power, this formed some kind of bond between the two powers. And since the Chaos Emerald's power is "unified by the controller", and Sonic obviously had not much objection to his new form, the bond was even stronger. Once Sonic and Chip restored the last Emerald, all of the negative energy had been sapped away by the Temples, leaving Sonic with pure dark energy. This....led to an easy takeaway.
Yet another Sonic Unleashed moment. A lot of people were wondering how Eggman knew that releasing Dark Gaia by cracking the planet into seven pieces wouldn't just destroy Earth. Well, this is not the first time Eggman ripped the planet apart with the Chaos Emeralds. Sonic Advance 3 has Eggman used the gems to rip the planet into seven zones much like this time, only they were Genesis-era style zones instead of the more realistic continents in Unleashed.
In Sonic Unleashed, a lot of characters (Sonic's friends included) are very skeptical when the Werehog claims to be Sonic. Then it hit me, the last time people accepted that someone was Sonic when he really wasn't, the events of SA 2 happened. This means that everyone has learned from their mistake, and are less trusting when someone claims to be Sonic.
Possibly, Sonic becomes the Werehog by absorbing the dark energy from the Chaos Emeralds (and a bit of Dark Gaia). Only one other character has ever drained the dark energy from the CE's and that was Chaos who, like the "Werehog" grew sharp teeth, bulkier, and had the ability to stretch. One wonders why they didn't call him Sonic Chaos...
Probably because the name Sonic Chaos already belonged to something else.
There's also the fact that some of the Dark Gaia spawns also had stretchy arms, meaning he could've just gotten the ability from absorbing part of Dark Gaia's essence, which only takes effect at night, triggering the involuntary transformation into the werehog.