A cat owner's scary moment when trying to wake up her senior feline went viral on TikTok with both her and viewers breathing a sigh of relief in the end.

As cats enter their senior years, the amount of sleep they get usually increases. Some senior cats can sleep up to 20 hours a day. So catching her cat in the middle of a snooze was nothing new for owner and TikTok user @queenfibi1.

In a June 27 clip that amassed over 4.5 million views, the owner checked on her senior cat sleeping on the window sill, but her "soul left" her body when something wasn't adding up.

For nearly two minutes she tried waking her cat up. Slowly at first, she gently touched her cat's face. But panic rushed in as her cat wasn't opening her eyes. She was especially concerned because her cat normally reacts immediately. The owner was concerned her 16-year-old fur baby had passed.

The caption reads: "This is not for the weak."

The video shows how she tried harder to wake her cat by patting her belly and head. Heart racing, the owner stops filming and screams her cat's name.

She finally could breathe again once her cat opened her eyes and awoke from her very deep slumber. They cuddled for the rest of the day after that scary situation.

Newsweek reached out to @queenfibi1 via TikTok for additional information.

TikTokers flooded the comment section with the same rollercoaster of emotions the owner felt.

"The way you feel your heart freeze and drop to the floor for these seconds," commented a viewer.

Others reaffirmed her cat was "just napping hard."

One person wrote: "She was like, 'Damn woman can't an old lady get some rest around here?' I would scream too."

Cats In Deep Sleep

Most of the time cats only experience light sleeping while they rest. This is due to their natural instinct to remain alert and react if there are any threats or predators, a Cats.com article stated. However, there are a few rare moments they'll fall into a deep slumber.

Owners might notice a cat's deep sleep when the purring stops and they're silent. Although, you might hear a snore here or there. Their breath slows down, which in turn makes their body hardly move. However, if in REM sleep, you might notice their nose, ears or paws twitching.

If you find your cat in a deep sleep, consider it a compliment. Felines only relax and drift off completely when they feel safe. They trust you to keep them safe and view you as their protector.

Do you have funny and adorable videos or pictures of your pet you want to share? Send them to life@newsweek.com with some details about your best friend and they could appear in our Pet of the Week lineup.