Puppy tails don't just fall off by themselves - they are amputated or docked to conform to the breed standard. The breed standard was developed in the Middle Ages, when a tax on dogs was instituted. Working dogs, such as herding or guard dogs, were exempt from the tax and to show they were exempt had their tails docked.
If you see a boxer puppy prior to docking, then afterwards, you can see how much length is removed. Ideally, this is done by a veterinarian within the first few days of birth to minimize pain and scarring. However, some breeders will perform the procedure at home, sometimes with elastic bands (called an "elastrator" - it's also been marketed to castrate calves, sheep and goats).
for looks
You don't dock a puppys tail, it's illegal and cruel. And it's animal cruelty to remove its claws
one tailone tail
The boxer tail is long, thin and whip like. Their tendencies to break it while wagging is greatly increased if left undocked. If you've ever seen a boxer then you have seen their trademark "happy tail" and you could imagine the damage that tail would do if it were long.
If you adopt a six-week old Boxer puppy with an undocked tail, there is no need to take it to the vet, it is to late to have the tail docked.
Boxer
you should never cut a dogs tail off, it is very panefull and all dogs need tails.
No, a donkey's tail does not fall off. This is in reference to the animal. However, donkey tail plants do tend to fall off.
no it will cause them to much pain
A hamster's tail should never 'fall off' under any normal circumstance.
howd it fall off
put it in a pony tail