so I just got a 7-month-old beagle/chihuahua mix about three days ago. he is adorable and we absolutely want to make him a part of the family, but there are some problems that we have noticed. 1. He bites, a lot. it's a continuous problem with him. anytime I or one of my family members sit down on the sofa he jumps on the couch and starts biting. also anytime I try to pet him while he is calm or laying down, he bites me. trust me, we have tried to watch every youtube video and read every article on this subject and how to get him to chew on acceptable things. we have tried to redirect him so that whenever he bites that we show him his chew toy. but it seems like he will bite everything EXCEPT the actually chew toys that we show him. I know this is common for dogs of his age and I know that I need to have patience but I feel like I am not doing the right thing. 2. he has bad separation anxiety. anytime I try to go to the bathroom and don't let him in he will whine like crazy. and anytime I put him in his cage to rest he will also start whining and barking. I have heard people say that putting a blanket over his cage will help him to calm down but I don't want to make him feel anxious or mentally scar him which is why I am here. we haven't left him at our house alone yet so we don't know what to expect. also just a little bonus point every time I take him outside he is surprisingly calm. he will not bite me or anything. and he is calm around other dogs as well. but the moment I take him inside he is biting again. like I said I have tried to do my research on this but it seems like all of the instructions are super vague and don't tell you the specifics. so I guess my question is what things should I do so that he learns to chew on the right things? and what should I do to help with the separation anxiety? is this just a part of him getting used to the new home? since it takes about three weeks for a dog to get used to the home he is in what should I train him in those three weeks? cause I know I don't have the money to buy a million different chew toys just for him to choose one he likes. and also I don't want it to be too late since I know when dogs become adults it's harder to train them. I've heard a lot of things from videos and articles but I want to know what yall think about this since I'm guessing if you are on this forum you may have previous experience with these types of issues.