The effect of being aroused is not because of the dog as much as the contact with something warm and alive within a certain stage of life.
During Puberty it is normal to be aroused by nothing inparticular and anything ! Getting aroused is something you will begin to control as you get older. It can be embarrassing for a pubescent teenager though. Try not to let it show.
no
yes they are
Yes its quite normal i have dogs my friend has dogs and whenever they have a new litter they lose hair around their teats.
Yes, they are called the inner and outer Labia. When aroused they get engorged. The clitoris nerve is there too.
Yes it is normal why wouldn't it?
No, not many people are. Don't be silly.
sleep
Yes its quite common.
Normally, no. That would be an abnormal attraction to ham.
Yes, cats are normal and dogs are too.
maybe that golden retriever feels intimidated by the other dogs and or is not used to being around other dogs but it feels normal to be around people or other animals and does not get aggressive