Nearly two in five owners are now taking their pets on holiday, according to a survey.
And many would prefer to go on holiday with their pet than with their family, the poll by TravelSupermarket found.
As many as 13% would choose their pet over their partner as a holiday companion, while 10% would prefer to take a break with their pet rather than with their children.
For those travelling without their pet, 47% said it was the animal they missed the most when they were away.
Nearly half give their pet special attention when they return from a trip and 18% come back with a souvenir for it.
The poll, of 2,010 pet owners, also showed that 40% regularly check up on their animal while away and 36% said their pet's welfare was their biggest worry when on holiday.
TravelSupermarket's Bob Atkinson said: "We all know that Brits love their pets and this research has found that many pet-owners are happy to admit we actually miss our furry friends more than we miss immediate family and friends when we are away."