In all honesty, I have no idea what the English-language name of this show is. The Japanese title is 猫の事務所, which google translates as "Office of the Cat." As for where I found the link, it's part of the massive list of anime with transformations I described in an earlier post.
I also have no idea what this show is about, aside from that fact that it stars a bunch of anthropomorphic house-cats who work in an office. One of these cats suddenly transforms into a big-ass lion. Once again, I have no idea why.
Off Topic Update: the link for Adventure Time has been updated with a working video. Yay Hugwolf!