this question is tough to answer because every animal is different... only way to answer this is to be specific on which animal you mean.
an ant
it depends what animal it is.
It depends on the type on animal
A sea turtle can live up to a hundred years.
till you feed him
As long as you take care of it by giving it food and water and the normal stuff you give a dog then he/she should live as long as a dog without cataracts...the only reason he/she would not is if it had to fed for itself which would be near impossible for a blind animal to do.
it take's 18 muinite's to break it if you have 100 animal's but if you have 30 of each animal's it takes 4.
Animal adaptations
water26
It takes years.
they have gills and take the oxygen out of the water !
there is no saying how long it will take. just be a good friend and they WILL give you it.