Hi. I am new to the forum and aside from my introductory post, this is my first post. I recently adopted a 1 or 2 year old terrier mix from the shelter and added her to the "family"-another terrier mix indoors and eight cats. I have a St Bernard and a shepherd mix outside. The new girl, Sheba, has exhibited some good qualities, but some alarming ones also. She's incredibly smart. Her major drawback is that she's very easily excitable. It only takes a second for her to go from mildly excited about something to hyperdrive. She loses control. She zooms about uncontrollably, and bites anything that gets close to her mouth. She isn't biting to tear flesh, but it is biting nonetheless. When this happens I usually try to put her into a sit, or I lay her on her side and try to get her to calm down. She fights me for several minutes-kicking and writhing. Most of the time she leaves the cats alone, but several times a day one hisses or runs and the chase is on. I can usually stop her there, too, but I'm worried about the times I'm not home. We've had her about a month and she hasn't hurt one yet, but I realize it could easily happen. She's about 20 pounds of muscle. I'm not real sure what her mix is, but she looks like a large cairn terrier. She's black and red brindle, with a white chest, and paws. Her jaw is undershot like a bulldog. Honestly, she looks like a warthog in my opinion. When she plays or squabbles, she wraps her paws around your arms or around the other dog's chest. She's also pretty domineering towards the other indoor dog. they don't fight over food bowls, but there is constant dominance posturing-growling, mouthing, pinning, etc. Neither dog is giving in. They are both spayed females. Which I realize now, is not the best combination. I know I can't totally change her temperment, but how do I get her to calm down once she goes nutty? She's also terrible on a leash. She tries to hold it in her mouth, she gets it wrapped and tangled around her body, and has no idea how to walk nicely. I'm afraid I have adopted one major pain in the butt. I really like her, so re-homing her is not high on the list of solutions. What, other than keeping her worn out, will help? I hope to post a picture of her very soon, and maybe some video of her behavior. I'd like some opinions on what breeds she may be a mix of. Having some idea of that may help when dealing with her. She also barks loudly and obnoxiously at the cats and the other dogs at times. The shelter assured me she was an excellent dog. I guess I should learn to take that with a grain of salt.