...Seriously?
It should only be a matter of a couple hours.
A tattoo which is on the shin should sting for a few days.
giving birth
Immediately
You should not use "homemade" tattoo ink, it is not safe.
at least 2 months, the longer the better.
After 3 months
6 weeks
yes dogs do lose their hair after giving birth and it would last proably for six months.
A cow shouldn't be bleeding after giving birth. She may have a torn uterus, so you'd better get the vet out ASAP.
Does can become pregnant an hour after GIVING BIRTH. But DO NOT try this as it's dangerous for the mother.