No not at all. I love all dogs....well I love all animals but I actually like the big dogs more so than the little ones. It's the little dogs that you have to watch out for, but I love them too.
I of course have had times when a big dog wasn't on a leash and I didn't know the dog it made me a bit nervous but I try to stay calm. One time I went to pick my step son up from a place he wasn't supposed to be at and there was a cop car out front, well all the officers were standing out in front talking and as I walk by out of no where this big dog starts barking at me as I passed the cop car. I screamed and jumped, as I look over it's a police dog (German Shepard) and all the cops are laughing at me.
All I could do was catch my breath and tell them "that wasn't funny" lol But I've had but I've had Pit Bulls, Rottweilers, Shepherd mix and these so called "dangerous dogs" were nothing but big babies to anyone that came in the house. I learned long ago it's not the breed but the owner who make these animals into attack dogs.