Netflix is slowly improving its nature documentary capabilities, and this is one of the best shows it's made so far. But this is a genre where they still need a lot of work, and Night on Earth is the only one so far that really competes with the old pros (BBC, NatGeo, etc).
The footage is great, but the editing could use some work. All of the somber moments are glossed over too much, either by cutting away way before a kill (so early that you are still unsure whether or not the hunter was successful) or by not giving the audience enough time and/or visual cues to allow the seriousness to settle in.
The information is good, but there is nothing presented here that hasn't already been shown in numerous other and more popular documentaries.
The voice acting is very hit and miss. Jones and Cranston do well in their episodes. Mackie isn't terrible, but his attempt at sounding mysterious comes off very dry. Wilson is horrendous to the point where the whole episode would have been better on mute.
*EDIT*: After watching season 2, I've bumped my rating up 1 star because the film and shot quality has vastly improved even from the previous year's season. In particular, some of the raptor episode's scenes were so stunning and unique that they made my jaw hit the floor. Serkis is the only voice actor this season to put some real enthusiasm into his narration, but none of the 4 narrators are bad.