A bag like organ that holds urine is the bladder.
Urine bag
The little bag that holds urine is called a urine collection bag or a urinary drainage bag.
Her bag look like a new bag but it's a very old bag it has words that say boy and it's a sling bag
Rat urine looks like what anyone would expect urine to look like. It is a liquid, that can range in color or smell. The colors and smells are dependent on the rats diet.
a brown bag
Burlap does not look like a paper bag. A paper bag is smooth, burlap is not. I don't know the correct answer to this, but I know burlap is not correct.
Launder the bag with a product like Oxyclean. There are also several urine-removal products for sale in the grocery store - look in the pet food aisle, usually located near the dog shampoos.
A bag full of air.
The bladder.
The Bladder
The bladder.