Body language is usually a good sign. Also if they tell you.
people need to read the signs for help them
some people say 18 but is say whatever
It may need to get used to being left alone slowly. With being left for only 5 minutes at first and then the time gradually being built up. It maybe also benefit from having something to do when it is left alone. For example a chew toy or a stuffed kong.
Any animal can have separation anxiety without proper training. You just need to train the animal that it is okay to be alone for a while. My dog can be left alone for more than 4 hours if need be. She has no problem being left alone. They just need to be reminded that we are always going to come back.
Small children should never be left home alone.
Greyhounds shouldn't be left alone for long. They are animals that need a lot of exercise and attention. I would suggest not leaving your dog for any longer than 2 hours.
That's private. The kids just need to be left alone.
Ummm, this is easy. Talk to your parents! Tell them that you need to be left alone.
The legal age to stay home alone is 12 years
Mainly to be left alone, somewhere with enough prey animals and not many humans.
for teeth if you have a bad cavity or if you are missing some of your tooth
if you smell bad and people wrinkle their noses around you