Do pigs have nightmares?

[Countrylass]

I'm sitting here watching Lulu sleeping and every so often she screws her nose up and twitches. I wonder if piggies have nightmares as I'm sure they dream - little ears and paws twitch or they wake themselves up then settle back down to carry on sleeping

 

[CandyFloss]

I dont know ... but my dogs definately do dream as they twitch, waggle their legs and woof when they are asleep sometimes so I dont see why piggies wouldnt dream .....