a sad tail of a dog is when the tail either goes down or left depending on the species of dog.
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It's a sign of fear for a dog, in which a dog puts its tail underneath it's body.
or at least this is what I think you are trying to find out.
No it does not hurt when the tail curls. it would be very sad if it did.
They put their tail in between their legs
it matters on the dog. curly tail dogs curl their tail up when their happy, and wag it the same time when their super happy. dogs with strait tails just wag it. when they're bored/ sad all dog's tail go down. And when all dogs a scared the tail is between their legs or it's strait as if their sad, but their tail would be stiff.
The "Retardo Monster" seriously if you cant figure it out that's just sad.
Because he/she is either sad or frightened for some reason.
sad would have hids ears back mad would be growling happy tail wagging
their sad...
usually, his tail goes in between his legs and possibly he dog will wimper. if it's your dog, you can just tell when he's sad. you can see it in his eyes.
You can figure out if any animal is in pain because it will be sad. It will whimper and drag it's tail and just be so sad, you'll definitely notice the change!
A anime that made me cry is Angel Beats. I know that Astarotte's Tail is sad in the ending but if you watch all the way, there is something that will cheer you up! I cried and watch too much animes to know what sad even is...
Sometimes because it sad or it does not want to try to play with him or her make them happy that What I do with mine
Well, I have owned cats since I was 5, and usually you can tell when their tail is constantly limp, or they will not get up to eat or drink. Usually cats are not so much sad as feeling sick or angry. They rarely get just sad. When mine was feeling badly, his eyes leaked a gooey substance and he wouldn't get up for anything. He'd just lay there all day. Check the cat's eyes, they normally squint and have their tail wag at least a few inches. If not, you may have a sick/sad kitty.