Like humans and animals, plants need both water and nutrients (food) to survive. Most all plants use water to carry moisture and nutrients back and forth between the roots and leaves. Water, as well as nutrients, is normally taken up through the roots from the soil.
So, for example, a 3-month old puppy should be able to hold its urine for approximately 4 hours in a pinch. This means that if you have a properly toilet trained 4-month-old puppy that, theoretically, can hold its urine for 5 hours, and you shut that puppy in a crate for 6 or 7 hours, you are courting disaster.
â Dogs can only be relied on to hold their urine or feces one hour for every month old they are, until 8 hours at 8 months old. Never expect a dog to hold it longer than 8 hours, and remember that sick or older dogs wonât be able to hold it as long as healthy young adult dogs.