My dog keeps peeing & pooping in the house?

She goes away with her tail between her legs because she knows it's bad, and worse she expects you to scold her or be angry with her. Dogs don't want to defecate where they live, or their den. She's holding it as long as she can, and then she gets so nervous that she just has to let it out, she's not worrying about aiming in the right place. Dogs sometimes bite when excited. You scolding her and putting her in time out is showing her general neglect and disapproval for her, as a dog. She probably doesn't bite for the rest of the day because she's upset at you. Dogs are instinctually meant to go potty outside. Your potty training should consist of you taking her out, reliably. Not doing this is torture, regardless of it inconveniencing you. If you're telling me that on certain occasions you can't leave where you live because it's not an option, then you sound like an indentured slave. Your dog needs to be able to go outside. That's the end of the story. Trying to turn your dog who is rapidly becoming an adult into some hybrid of man/dog that relieves herself in the house is not only unsanitary, I can't imagine the instinctual and mental rammifications this has on your dog. You should at least take your dog out to go to the bathroom 3 times a day, and in clockwork with it's feeding.

House train her to go outside instead of on those dam stinking pads. You gave her permission to use you home as a bathroom when you put pats down. At 6 months she should be trained or almost to go outside, living in a flat or an apartment is not an excuse to be lazy and a filthy stinking slob. Rehome this dog to some one that will do right by it. Stop using excuses.

Pads don't work, get rid of them. There is no solution for your problem. He will need to go outside more often. I am upset though that you brought a cocker spaniel to live his life out in an apartment, they were bred as hunting dogs and love having grass under their feet.