SERIES PREMIERE: This new spinoff series takes the Too Cute concept, of cramming lots of adorable animal footage into one place, and thinks smaller. Specifically, it presents its cuddly creatures in 30-minute doses instead of hour-long shows, and focuses exclusively on the tinier spectrum of playful pets. Tonight, the series launches with a double-dose premiere. First, at 8 p.m. ET, is an episode devoted to English bulldogs and mixed breeds, followed at 8:30 p.m. ET by a show giving other animals their shots at small-scale stardom. By Animal Planet standards, this new Pint Sized series is the Shih Tzu.