In general, pets bring happiness and comfort to our lives.
But occasionally, and as these photos prove, they can transform themselves into agents of macabre mischief.
Wake up Jaco has created a creepy gallery from around the world of pets caught giving their owners the heebie jeebies.
Curled up in a shady corner or hidden under the sheets, our furry companions are masters of disguise – until they jump out in terrifying fashion.
Whether it’s a spicy ambush or an innocent game gone wrong, these images are bound to raise a laugh…eventually.
Eye-eye! A late-night encounter between two felines left one owner startled when only the visiting cat’s eyes were visible
As expected, cats and dogs appear to be the main culprits, with the special appearance of a sinister crow that is caught with a kitchen knife in its mouth.
A black cat looks like a ghostly apparition after falling into a bowl of flour meant for baking.
Meanwhile, a dog’s mouth turns into a huge, creepy smile – it looks ready to swallow you up.
Here, FEMAIL takes a look at some of the scariest pets out there…
This ginger cat has excellent balance, but would freak out anyone who sees it
One worrying photo captures a formidable crow with a very large knife in its beak
A gray feline turned out to be a creepy distraction from the television as it sat with its knees tucked into its chest, staring
Are you looking at me? In a creepy surprise, a white cat on the windowsill stared through the curtains at its owner
One pet owner got quite scared when his dog jumped on the bed with a fork in his mouth
A black cat looks like a ghostly apparition after falling into a bowl of flour meant for baking
A hamster has fallen asleep here in a terrifying position, with its mouth firmly in the hamster wheel
A dog’s mouth turns into a huge, creepy smile – he looks ready to swallow you with his gruesome teeth
In this case, a cat may be in touch with the spiritual realm as it sits ghostly staring at a blank wall