My partner and I have two dogs, who we adopted as rescues. They are roughly the same age - Dog 1 who we adopted in December 2020 is 9 months old and Dog 2 who we adopted in Feb 2021 is a year old. It has been completely fine and manageable until we got Dog 1 spayed in April. Her recovery was fine, but since then she's been out of control including biting Dog 2's legs! I know dogs playfight, but Dog 2 looks genuinely hurt when this happens. They play well most of the time but when this does happen we separate them and tell Dog 1 off.
Dog 2 is quite a special case rescue and is very nervous (she won't even go for walks yet and is scared of everyone apart from us). I suppose I'm just worried that this will affect how she copes, especially as she was rehomed with us partially because we have Dog 1, as she learns better from other dogs than from humans.
Is leg biting normal? I don't know if we're dealing with it properly, and it's really starting to stress me out.
Other things to note: Dog 2 is not spayed yet, but will be very soon (she's just come out of a season hence why the rescue couldn't do her). Dog 1 goes out with a dog-walker and a few other dogs twice a week purely for socialisation purposes, so they do get time apart. Dog 2 has special visits from the dog walker to build up her confidence towards her and will also be going out with a group of dogs (not at the same time). I'm not sure what else is important to note but any advice is appreciated.