To celebrate the start of Spring, Animal Planet kicked off a 94-hour marathon of its series Too Cute, about animals completing milestones.

For fans who are looking for even more cute once the marathon is over, Animal Planet will be airing a Too Cute! mini-marathon on Sunday, March 23 from 6 a.m.-8 p.m. ET/PT.

Four 22-minute “Too Cute” episodes from Animal Planet have the distinction of being the first TV series to shoot and post 4K/60p. “Discovery Communications has a long and established track record of ...