Leave It to Beavers

The episode was viewed by 4.33 million people, earning a 1.4/4 in the 18-49 rating demographics on the Nielson ratings scale, ranking second on its timeslot and sixth for the night in the 18-49 demographics, behind 20/20, Shark Tank, CSI: NY, Blue Bloods, and Undercover Boss.[1] This was a 6% decrease in viewership from the previous episode, which was watched by 4.56 from an 1.4/4 in the 18-49 demographics.[2] This means that 1.4 percent of all households with televisions watched the episode, while 4 percent of all households watching television at that time watched it.

"Leave It to Beavers" received positive reviews. The A.V. Club's Kevin McFarland gave the episode a "B" grade and wrote, "About two thirds of the way through 'Leave It To The Beavers,' one of the beaver Wesen tells Nick that 'bravery isn’t in our nature,' but our hero refuses to believe that ancient standard. He's still relatively new to investigating matters of the Wesen world, and wants to believe in change; that any creature, like Bud, the first beaver he encountered, can muster up enough bravery to stand up to anything, from bridge trolls enforcing archaic tradition to Reapers out collecting heads. Though there is a moral built into that conversation, and the episode at large, it's hard to believe that this show would reach for an episodic moral over darkly lit action sequences, which inevitably pop up in the last ten minutes this week. It's a thrilling conclusion to an episode filled with a lot of talking and stunted inaction. Over the back half of this season, I've gone from wanting this show to succeed while feeling frustrated at how it squanders potential, into largely enjoying everything with a few reservations. That trepidation was more pronounced tonight that it has been the past two weeks, but still, I'm very pleased with the progress."[3]

Nick McHatton from TV Fanatic, gave a 4.8 star rating out of 5, stating: "'Leave It To Beavers' is the episode we've all been waiting for. In many ways it is the perfect episode to transition towards the end of the season. So many of its plot culminations are moments we've been rooting for and wanting and waiting to see since the beginning of the series."[4]

Shilo Adams from TV Overmind wrote, "The most frustrating episode of television is one that has all the elements to be great yet doesn't quite gel. You see the potential on the screen and keep waiting for that moment when it all clicks, but there's something about it that keeps it from feeling complete. It could be something relatively minor that undoes its quality, like a momentary writing lapse or a misused character, but it tends to come down to execution. Put simply, the episode doesn't get pieced together properly, typically leaving things a bit uneven or lacking compared to what they could have been. After a string of improvement, 'Leave It to Beavers' became that type of episode for Grimm."[5]