As long as necessary. Cows can live off of hay for 6 or more months of the year when pasture is unavailable. Cows can even live off of hay all year round. But they can't live off of hay alone if you don't provide water and mineral with their feed.
As long as it doesn't dry off or isn't wiped off.
500 years.
lice can live only one to two days with out an host.
200 days
1 second
forever
idk the answre sor......
For life if there smart.
On and off from 1920 till 1941.
Yes they can as long is they have nutrients to live off of ...and oxygen...
Yes. But not for too long. Then they will look for you.