The bladder of a large domestic dog can hold 1.4 liters (about 0.4 of a gallon) of fluid, or roughly the amount of a large bottle of soda.
The Short Answer According to the Humane Society, the number of hours a small can hold his pee is directly proportional to his age. For instance, if he's one month old, he can hold his bladder for one hour. So, if you have a two-month-old, you might want to wake him up to pee every two hours.
However, at one year he does hold his bladder about 9 - 10 hours at night, and can hold it for 6 hours during the day if no one is home to walk him (which is the exception rather than the rule).
Puppies can usually 'hold it in' about one hour per every month of their age. So if your puppy is 4 months old, it will be able to control his bladder for about 4 hours.
Once they reach the eight-month mark, they should be able to withstand up to six hours without having to go outside.
A healthy human bladder can hold between 400 to 500 milliliters of urine, or about 2 cups, before it reaches capacity. Though a healthy bladder can stretch and accommodate larger volumes of urine, it's important to urinate at regular intervals.
Typically, a puppy can control their bladder one hour for every month of age. So if your puppy is 2 months old, they can hold it for about two hours. Don't go longer than this between bathroom breaks or they're likely to have an accident.
Puppies can only hold their bladder for approximately their age in months plus one hour (source). For example, a three-month-old Boston Terrier puppy would be able to “hold it” for around four hours.
As a general rule of thumb, you can expect a dog to be able to hold their pee for roughly one hour for every month old that they are, up until they are 8 months old. Adult dogs can usually be expected to hold their pee for 6-8 hours.
Dogs can go for 8 to 10 hours without urinating overnight, while sleeping. However, all dogs need to be taken out after a meal or a drink, upon waking up and after a period of play. Health: Urinary frequency in dogs will vary due to factors such as age, sex, body size and overall health.
At What Age Can Puppies Hold Their Bladder All Night? In general, we expect puppies to hold it all night by the time they are five months old, although some pups can sometimes take a little longer. Just as with children, potty training is an individual matter.
Don't Ask Your Puppy to Hold it for Too Long Remember, puppies can't control their bladder until they're about 16 weeks old. After that, in general they can only hold their bladder for the same number of hours as the number of months of their age plus one. So, a four-month-old puppy can only hold it for five hours.