Frustrated Blonde

There was a blonde who was sick and tired of being ridiculed for being blonde, so she decided to fix it by dying her hair brunette. Well, she was driving along a country road one day when she saw a shepherd with his flock. She decided to see if she could pass as a brunette and if she did indeed get any smarter. She pulled over to the side of the road and asked the shepherd if she could guess how many sheep he had could she have one. The shepherd thought this was an unusual request, but he agreed. The blonde thought about it for a minute and said,

"One hundred and fifty." The shepherd said she was right and that she could pick a sheep to take home. She did and as she was putting it into the trunk of the car, the shepherd stopped her and said,

"If I can guess your real hair color, can I have my dog back?"