Watchly Safety Review

Backyard Squirrel Maze 1.0- Ninja Warrior Course

Mark Rober

21:40 · 145.4M views · May 24, 2020

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Minor FlagsReviewed June 2026

1Minor Flag

7No Issues

This video is safe and genuinely enriching for kids of nearly all ages, combining backyard comedy with real science in a way that's hard to find elsewhere. Mark Rober's squirrel obstacle course is creative, funny, and packed with accessible physics lessons about momentum, terminal velocity, and animal behavior — the only mild note for parents is a brief reference to a squirrel being launched, though the video goes out of its way to explain the safety precautions taken.

Content Breakdown · 8 Categories

Hidden Advertising & Sponsored ContentNot present

The creator explicitly states the optical illusion dish link is 'not sponsored' and the CrunchLabs mention is transparently self-promotional (the creator's own company), so no hidden or undisclosed advertising is present.

See evidence (2)

“'They're like nine bucks on Amazon, and I put a link... in the video description' — explicitly noted as not sponsored”

“CrunchLabs plug is the creator's own company, transparently disclosed in the description”

Parasocial & Emotional ManipulationNot present

Engagement Baiting & Manipulative CTAsNot present

The video includes a straightforward, non-manipulative mention of subscribing to the CrunchLabs YouTube channel ('you should also go subscribe… cause we've got some bangers in the pipeline'), which is a standard, non-coercive CTA without guilt-tripping or superstition framing.

See evidence (1)

“'you should also go subscribe to the CrunchLabs YouTube channel' — standard, non-manipulative CTA”

Low-Quality, Extreme & Stunt ContentNot present

While the video has an elaborate, engineered setup, it is substantive educational and creative content rather than shock-value stunt content; the squirrel launcher is used sparingly, safely, and with genuine physics explanation rather than for pure spectacle.

See evidence (1)

“Squirrel-pult used only twice, with detailed safety justification and slow-motion physics analysis”

Playful & Fantasy ViolenceA little

The video contains mild playful 'violence' in the form of the squirrel-pult launcher and the Homewrecker trapdoor, both of which are explicitly designed to be safe and are framed humorously as part of a game-show-style obstacle course rather than any realistic harm.

See evidence (3)

“'It's not a catapult, it's a squirrel-pult' — pneumatic launcher that sends squirrels airborne briefly”

“Homewrecker trapdoor that drops squirrels back to the start”

“Pitchfork Tumblers described as 'squirrel-friendly' with break-away safety mechanism”

Strong & Crude LanguageNot present

The video contains virtually no strong or crude language; the only borderline instance is the informal phrase 'butt-ton' used humorously to describe a quantity of walnuts, which is a mild euphemism rather than genuine profanity.

See evidence (1)

“'it releases a butt-ton of walnuts' — mild informal expression, not genuinely crude”

Realistic Violence, Threats & WeaponsNot present

No realistic violence or threats appear in this video; the squirrel-pult (pneumatic launcher) is explicitly described as operating at safe, low pressure and is framed as a playful engineering challenge rather than a weapon or threat.

See evidence (1)

“Squirrel-pult described at '40% full power' with 'half a g' acceleration, explicitly compared to being 10x safer than a rollercoaster”

Sexual Education & Reproductive HealthNot present

The only reproductive reference is a brief, wholesome discovery that Phantastic Gus is pregnant, mentioned in passing as a charming plot twist with no clinical or detailed discussion.

See evidence (1)

“'Phantastic Gus is not a dude and he's pregnant' — brief, incidental, non-detailed mention”

What Parents Need to Know

This is an exceptionally well-made video that blends entertainment with education in a way that genuinely benefits young viewers. Kids will laugh at the squirrels' antics while absorbing real concepts like conservation of angular momentum, terminal velocity, and animal cognition — all explained clearly and enthusiastically. The creator is transparent about squirrel safety, explicitly describing the low launch force and manual override controls used. There's a brief, funny moment where the creator discovers 'Phat Gus' is pregnant, handled with humor and zero inappropriate content. There's also a passing reference to the creator's previous 'glitter bomb' video targeting package thieves, which is harmless context. The video models curiosity, patience, problem-solving, and a genuine appreciation for nature in suburban environments, making it a strong choice for family viewing.

Talk to Your Kids About

1Why do you think the squirrels kept figuring out each obstacle? What does that tell us about how smart animals can be?
2The video explains how squirrels use their arms and tails to land safely — can you think of other animals that have special tricks for surviving falls or jumps?
3Mark Rober started out frustrated with the squirrels but ended up loving them. Have you ever changed your mind about something after spending more time with it?
4If you were designing an obstacle course for a backyard animal, what animal would you pick and what challenges would you include?

Backyard Squirrel Maze 1.0- Ninja Warrior Course

Protected Viewing

What's This Video About?

Squirrels were stealing my bird seed so I solved the problem with mechanical engineering :) Here is an explanation of the illusion dish thing!- https://demos.smu.ca/index.php/demos/optics/69-mirage-mirror Here is a link to the illusion dish (not sponsored :) https://www.amazon.com/dp/B0718XCG7F/ref=cm_sw_em_r_mt_dp_U_D9PYEbC85X14F I started a company called CrunchLabs where we build a toy together and then I teach you all the juicy physics for how it works. So if you want to learn to think like an engineer and have really fun time doing it, check out the current promotion where you get 2 FREE boxes at https://crunchlabs.com You should also go subscribe to the CrunchLabs YouTube channel cause we’ve got some bangers in the pipeline- https://www.youtube.com/crunchlabs Thanks to these folks for providing some of the music in the video: Ponder - https://youtube.com/@Pondermusic Laura Shigihara - @supershigi Andrew Applepie - https://soundcloud.com/andrewapplepie Blue Wednesday - https://soundcloud.com/bluewednesday *MUSIC* - Arrow (Instrumental) - Andrew Applepie http://andrewapplepie.com/ - Kalimba Jam - Blue Wednesday https://soundcloud.com/bluewednesday/ - Zambo - Devil in Disguise https://danijel-zambo.bandcamp.com/track/devil-in-disguise-2 - Cereal Killa - Blue Wednesday https://soundcloud.com/bluewednesday/ - J. Thompson - Real Quick Lovin' https://www.amazon.com/Real-Quick-Lovin/dp/B0010YGE3W - New Shoes - Blue Wednesday https://soundcloud.com/bluewednesday/ - Chi- Ponder- https://www.prodbyponder.com/5-free-beats32029775 - Marimba Idea - Blue Wednesday https://soundcloud.com/bluewednesday/ - Josef Falkenskold - Tiny Tumble https://www.epidemicsound.com/artists/josef-falkenskold - Nik- Ponder- https://www.prodbyponder.com/5-free-beats32029775

Frequently Asked Questions

What age is this video appropriate for?

This video is suitable for kids around age 6 and up. The humor, science explanations, and animal characters are engaging for a wide age range, and there is no inappropriate content to speak of.

Are the squirrels harmed in this video?

No, the squirrels are not harmed. The creator explicitly addresses animal safety, explaining that the launching mechanism was set to a very low force — about half a g, far less than a rollercoaster — and was only activated while he was actively watching with a manual override. The squirrels are shown returning to the course within minutes and are ultimately given free access to food.

Is there any bad language or inappropriate content?

There is one mild instance of 'freaking' and the phrase 'butt-ton,' both of which are very low-level and unlikely to concern most parents. There is no sexual content, violence, or other mature material in this video.

Does this video have educational value for kids?

Yes, it's genuinely educational. The video covers physics concepts like conservation of angular momentum, terminal velocity, and drag in an accessible and engaging way. It also touches on animal behavior, observation skills, and the scientific method through the creator's nut preference experiment.

Is there any advertising or product promotion in the video?

There is a brief mention of a $9 optical illusion toy available on Amazon and a link to another video about carnival game physics. These are minor and not disruptive to the overall content, which is overwhelmingly focused on the squirrel course itself.

Is this video suitable for kids who love animals or science?

It's an excellent choice for both. The video celebrates curiosity about backyard wildlife and frames scientific concepts through a fun, relatable story. Kids who enjoy animals, building, or nature are likely to find it especially captivating.