Lab tests have shown that cats don't love you the way dogs do. Tests have shown that a dog releases Oxytocin (the "love hormone") in their brains at much higher levels when compared to cats.
The eternal dispute between dog and cat lovers will probably never end.
However, scientists have found out which out of our feline or canine friends love us more.
As part of a new BBC2 documentary called "Cats v. Dogs", hosted by animal experts Chris Packham and Liz Bonnin, a neuroscientist has investigated which species prefers humans.
We already knew that, like humans, dogs release the 'love hormone' oxytocin.
This test has never before been done on cats.