Tequila, a lapdog pitbull to good home with no other dogs - Price: free in Asheville, North Carolina

Tequila is a sweet, (even my vet said she was the sweetest dog in the world)  pitbull, who loves to be in the car (I take her to the Arboretum almost every week), and is totally house broke.  I have left her in the house for 11 hours with no problem.  She is a spayed, four year old, who is current on her rabies shots, and worming. 
I am willing to give her up because I have two other dogs, 8 and 14, and she is the Alpha dog.  She is so jealous, I can barely pet the other dogs, she will push them out of the way.  It's only with my dogs, because at the arboretum, or when other people have come over with their dogs, she is fne.
I just cann't put the two old guys though this anymore.
Only to a good home with no other dogs, please.