It could be mange.
I used Epi-Smoothe on my dog. She has some spots where her fur is falling out
Alligator gar lose the spotting as they age.
I have a three month old teacup poodle too and she has thinner hair than my miniature/standard poodle has. The back of her legs are very thin and I can see her skin. Not sure if all teacup are like this or not, this is our first teacup.
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These brown spots are the bane of people who iron everywhere. You have scorched the fabric by using an iron that is too hot and leaving the iron in place too long.
2 in the first6 in the second leaving two spots for stabilization.
If your backyard is fenced, try to look for the spot/s that your dog is getting under. Once you find the spots block them off with pieces of wood or wire.
Cat leaving blood spots is a serious issue, it may be possible that your cat is suffering from some disease. You must take it to vet to know the exact reason.
It will buckle and crack leaving high and low spots with jagged edges in the most severe cases.
A hot spot in environment terms, means a biome (habitat) that is severely losing its biodiversity and is under threat from humans.
"Some of the risks of whitening your teeth are sensitivity and leaving spots on your teeth. Although both usually go away, they make whitening uncomfortable and it is unknown how long the spots will last."
Some times the babies will chew on the mothers hair and this will cause bald spots.