Pulis is unbeaten in his first four games since replacing Alan Irvine, including Saturday's 2-1 win over Birmingham in the FA Cup fourth round.
Goalkeeper Foster, 31, believes the Albion squad have been given a wake-up call by the 57-year-old.
"It is brutal, but I love it. I think it's fantastic," he said.
"I would say he is just on to players a bit more. Nobody really gets away with anything now.
"He lets nobody have rest days or slack off - nothing like that.
"If I was a manager, I would be like him. You've got to treat football players like kids sometimes. If you give them an inch, they will take a mile - it's amazing."
Ecco perchè anche lo Stoke era brutale
O forse è stato lo stesso Stoke a far diventare Pulis brutale nei metodi
