In Oct. of 2007, a photo of a mysterious creature showed up and the creature has been dubbed The Jacob's Creature. There's been a lot of talk on what this is. Many people say it's a juvenile bigfoot while others say it's a bear (myself, a believer in the existence of the creature, included). I've gotten a lot of comments over the years on people's thoughts of this creature and today a guy just sent me this gif, to prove that it's not a bear.
This Youtube video was also added in the comments (love the music at the scientific part).
Dude, take any two pictures that are taken at different times, from different angles, from different cameras, different lighting, different objects, and they'll have...wait for it...different qualities! HOLY SHIT! If anything, you're supporting the fact that it's a bear. Sir or, most likely, dear child, please go to this link to see my take on the issue (dated November 05, 2007). Here's a picture from that entry where I took a side by side picture of the creature and a version with a pasted on bear-head. The entry itself has more images to help clarify the image.
Also, here's another side-by-side comparison of two similar things taken by different cameras, at different times. I've included some guides similar to yours to help show the difference between the two. Click on the image so it's biggerized for better viewing.
If you're interested in the comments, here's the post which garnered the most comments and from which the last commenter commented in the comments.