Just staph infection pictures and symptoms information

My grandma has MRSA she has touched dog what are signs for the dog?

by staph infection pictures

Ok so im pretty sure dogs can get it because it is a staph like infection..
So she didnt pay any attention to it and she was petting him and playing with him before she knew what it was..
She is scared that she could have givin him it although there are no symptoms..
So can he get it?
And what are signs?
Help please!