My Dog Attacks Me When I Punish Him, What Should I Do?(extra Details For My Last Question)?

i have a two year old cockapoo and he attacks me when i punish him. he is a dominant male that is fixed. he has a potty training problem, ive worked with him since he was eight weeks old and he is still not housebroken. he is crate trained. i correct him by either smacking him on the butt or yelling at him(verbal commands, bad dog ect.) i havent let him get away with much without a punishment. he attacks any dog in sight and doesnt like little children. his attacking has gotten soo bad that i took him back to the breeder for advice. she told me when he attacks me i should grab him by the scruff and put him on his back until he calms down. ive tried this but after he calms down and i let go he attacks me again. he can be a nice dog sometimes. ive taken him to the vet and there are no health causes. please help!!!

A Question About My Puppy?

Okay I have a four month old cockapoo that Im potty training. The issue is when he has an accident on the floor he eats it. What could be the cause and how can I stop him from eating it? Thank you to all my responses..

Puppy Potty Training Question…?

We have a cockapoo that is 2mos. old this week.She almost always consistently pees outside,but we experience two problems with her:
1)She will not notify us by bark or whine or going to the door when she has to go out,we just take her out every hour.(OLD!)
2)She has only pooped outside once!
Any suggestions appreciated.