Millions of years
All snakes where alive at that time
For as long as people have been alive.
For as long as man has been alive
Rats have been alive for hundreds of years. Rats have been alive for around for at least 900 years on Earth.
Fake snakes made of rubber were never alive in the first place. There is a kind of snake called a "rubber boa", and while there certainly are dead ones, there are also some who are alive; the species is not extinct. Rubber boas are interesting in that they're extremely docile and have never been known to bite a human, but they are alive. At least the ones who are alive are alive.
120 years
Igneous rock has never been alive.
Reticulated Pythons are the longest snakes. The longest in captivity was until recently 24 feet long but recently died. There have been many claims for snakes longer than this but none appear to bear close inspection. The longest, officially, was almost ten metres in length. There are possibly snakes in the wild that equal this.
765 years
about 2500 years
google how long have i been alive then put your date of birth down and the time
vulchers,badgers,snakes.