Real T-rex sounds (credit to StudioMod)

[GalliA]

These sounds are actually a LOT scarier to me than the movie roars. Imagine yourself in a dense forest and you hear these ominous noises, knowing something has caught your scent and is tracking you down

[VVyzard]

Due to the low frequencies not only would you hear this loudly but you'd also feel it throughout your whole body.

[proxylil]

T-rex's in movies always sounded really cool and scary, but this interpretation of a real life one sounds like an unholy nightmare

[sobrii]

I tried playing this over a set of speakers with decent bass, and my cat sat up straight and looked around with pure fear, pupils dilated and everything, and then hid under the couch. Not exactly normal behavior for her. I think some kind of primal fear response was unlocked there.

[Zafir]

Respect to the man who went back in time to record these beautiful yet terrifying sounds of a t-Rex.

[greatzillastudios]

Imagine how freaking terrifying this would be in real life. You're walking one day and hear what sound like a goose from hell. And suddenly you just see this 15-foot tall lizard standing in front of you and staring into your soul.

[cszabo]

We seriously need a horror game with these sounds.

[Lunar.Kaiii]

It's way more terrifying. It sounds like it's mocking you by laughing. Like a villain in an old school anime or videogame.

[elxaime]

Amazing how even with a 65-million year gap, the human ear instinctively fears the sounds of the ancient lizard kings.

[Ruberfi]

We know that T Rex had a lot in common with chickens in DNA structure... Imagine hearing one crow like a rooster in the morning with these low frequencies

[fetusdeletus]

0:17 somehow that noise is even more terrifying than a roar

[brendansoucy]

jesus, that image at 0:33 is terrifying, imagine coming out of the brush following the sounds of a running creek to find water, only to see that waiting for you, having known you were there since you were hundreds of yards away

[cmgoblin]

The thing people don’t realize is due to the sheer SIZE of these creatures… You would feel it too. You would literally feel the vocalizations in your body meaning it’s voice would invoke fear whether you liked it or not, sort of like how tiger roars “paralyze” their prey. The closer they got the more you would feel it meaning it would probably disorient you as well. Magnificent creatures.

[mohamadamirul]

The cackle from 0:17 to 0:27 is really unnerving.imagine urself in a pitch black forest and u hear that

[KingCraze]

I want this premise turned into a movie. Would be absolutely terrifying.

The T-Rex sounds could basically be the soundtrack.

[Bubla_balls]

That picture of that T rex looking at me in that pond actually gave me chills

[darkenergy]

Its crazy that we have an instinctual fear of these animals and yet we never coexisted with the bigger ones.

[pidialski]

0:43 absolutely haunting how close it sounds to an emergency siren, like even the creature itself is telling you to get out of there NOW

[mathiasESE]

Can you also feel that low sense of anxiety that comes when you listen to these sounds? It's the most primitive parts of our brains that once kept our ancestors alive that are telling us that we should get the hell out of here. I find it pretty fascinating.

[GhostsRustyKnee]

Considering how much geese terrify me, I think this is actually far more terrifying than the sounds in Jurassic Park.