Aggressive beagle puppy.
We have two beagle puppies who are 10 weeks old . Everything was fine until one got sick and diagnosed with parvo virus and almost died. He was gone for seven days and when we brought him back home after about 4 days his brother got aggressive toward him. He likes to attack him and bite him mean fully. He will also attack me and bit my arm with punctures and bruising. We cannot have the smaller one around him to play. We have been trying to keep them separate because the smaller is very vulnerable and is still trying to recover and get his weight back on. I am very stressed and at my wits end and don't know how to fix this. The bigger one does get reprimanded but it is not working and he still continues to bite me when he cannot get to his brother. Any suggestions??