Reruns of Donyatsu currently air on Crunchyroll. The series only lasted 12 episodes with the ending airing separately as a 13th "bonus" short. Episodes last less than two minutes.
This may be the first family-friendly short series to hit Crunchyroll. If I'm wrong on that, I will gladly correct this post.
Donyatsu believe it or not, is actually produced by Square Enix, the same people behind Final Fantasy, if you can believe it. Watching all 12 episodes, you would likely never notice.
Donyatsu takes place in a post-apocalyptic world, where the only surviving creatures left on Earth are wicked mice, and very soft-hearted, doughnut-cats. The concept sounds dark and freaky.... and yet it never comes across as dark at all. In fact, what caused the apocalypse isn't even really explained, and it's probably the cleanest apocalyptic show ever to hit television.
Each short finds Donyatsu and his friends playing, goofing around and basically enjoying friendship. The plot never seems to get very thick, and the visuals steer clear of being too scary. Probably the closest thing to a scary moment would be the "Tummy Ache" episode, but again, the visuals are less threatening than an episode of Sesame Street. Random shots of outer space show that the original intent was to take the cats outside orbit, but this ends up being more for the manga.
Donyatsu is soft, easy on the eyes, and doesn't overstay it's welcome. The manga is only slightly darker, but isn't very scary either. A decent starter series for small tots.
Codename Sailor earth
Codename Sailor Earth is a lifelong anime and wrestling fan. IRL she is cartoonist Koriander Bullard, formerly Koriander Ake, a happily married Chicagoan. Her favorite anime is Sailor Moon. A baby in the late 80's, the first anime titles she ever saw were Speed Racer, Voltron and Robotech.