Is it normal for my English Bulldog (8 years old) to be getting gray hair? Her gray muzzle used to be black!?

Yes, that's quite normal. It has more to do with genetics than anything else, early graying is a trait that can be carried from one of the parents.

My Great Dane puppy (2 years old) has a black mask, and I notice it is starting to gray. My other boy is 4 and shows no signs of gray at all.

Gray English Bulldog

Grey English Bulldog

She is 8 years old, shich means she is about 56 in human years. Most 56 year olds have gray hair! It is not a sign of a health problem, but it is a good indication that she is geriatric...

You shouldn't worry, unless there seems to be other problems with your dog. (incontinence, trouble breating, walking, or eating, etc).

No, dogs will sometimes gray just like people. I had a dog live to be 15, and her color was almost unrecognizable by then to when she was a puppy. It is natural, don't worry about it. But with your dog getting older, check with the vet about what she may need not due to graying, but just her getting old. Often they will need more checkups, medicine, and have health problems just like a person.

It doesn't indicate a health problem, just that she's starting to get older. Some dogs (like some people) will get grey earlier than others.

8 to 12 years,is the life expectancy of a bulldog,,she is getting old now

This is normal. She's getting old and most bulldogs don't live past the 10 year mark. Make sure you give her lots of love and she'll be fine.

Wow lots of bulldog questions today.

I've heard of that in several breeds. It's normal- they get old just like we do.

yep its normal, just like in humans she's get old. and is gonna get gray hair. in dogs years she is 56, so she's pretty old.