Lots of people would be happy to have a puppy or two in their house, but imagine 24 of them arriving at once.
That's what happened to the owners of two-year-old Tia the mastiff when she gave birth to a litter of 24 puppies.
Sadly four of the pups died, but the ones that survived - which are now seven weeks old - are thought to be worth about £1,000 each.
Guinness World Records said the current world best is a litter of 23 and added that they plan to contact Tia's owners.
The puppies will be a much bigger problem when they're older, becasue they'll all be around 2ft tall and weigh up to 13 stone.
Tia's owner Damian Ward said: Mr Ward said: "She certainly surprised us. When she went in for the caesarean I thought we would lose her and the pups.
"I was in shock for about two weeks. I was just a feeding robot," he added.
Tia is likely to set two world records - for biggest litter and most surviving puppies.