The default review on this show attacks it as tasteless, but y'know, sometimes a little mind-rot ISN'T A BAD THING. The real world can be such a cruel and unfunny place. Humor, even if it's in bad taste, can be more than enough to brighten things, even if just a little bit.
My family--especially the kids--just LOVES this show. It's like funniest home videos but all about animals. I will say that the narration and jokes are often groan-invoking cheesy for the adults, but the kids don't ever mind.
Little kids will really enjoy this show because of the funny animal clips. But like "America's Funniest Home Videos" with Tom Bergeron, it contains mild innuendo and animal clips with animals in iffy situations. This is the reason I think "Planet's" should be rated TV-G, though many adults and teens will find this show stupid.