This font is a tribute to the late, great Eric Gill: a famous 20th Century type designer who was awfully fond of pets. The TrueType version of this font is free for commercial use. Check the attached license agreement for details.
Please visit Larabiefonts.com for tons more freeware fonts by Ray Larabie.
Don’t forget to check out Typodermic.com, Ray’s commercial fonts collection.