Dr. Carmella's Guide to Understanding the Introverted! drawn by Schroeder Veidt. See also Explaining the Transgender Experience (made after this first attempt) and Circles of Acceptance (in easy-to-read cartoon form). [more inside]
Rosemary Mosco is a field naturalist who draws bird & nature comics: "bird and moon" (previously), "ghosts of the northeast woods", "bird sound mnemonics", "birds are gross", "evolution sucks". Her bi-weekly comic strip Wild Toronto ("It cleverly observed and taught us about the animals and plants that live in our city") ran on Torontoist for some months in 2008; she has an illustrated collection of 55-word stories as well (previously mentioned). Her website, flickr, & tumblr.
The Penguins of Madagascar is a funny, fast-paced, and family-friendly cartoon series that you may not be watching... yet. [more inside]