there is 1,000 pounds on average
An average person would weigh 6 times less than their actual weight.
a GOOD QUALITY cat litter box can cost anywhere between 20 and 25 dollars. The litter boxes at Walmart would cost more like 15 dollars, or less
Yes, but an "average person" would not drink that much to start with.
about 20,000
62 Gallons
Around 1 - 6 pups is an average size litter.
That would vary to much from person to person to narrow down.
3 million
Usually the number of kittens in a litter is about 5. You really needs to research the breed to be sure. If you actually meant a liter/litre, there doesn't seem to be any readily available information on the volume of an average kitten. Briefly submerging a large enough sample of kittens in water, measuring how much water they displaced, and then working out a per-kitten average would be the easiest way to measure the volume of an average kitten, and from there it could be worked out how many average kittens are in a litre.
To answer your question a little more informations would be needed. Would you like to know how much the average person spends on grocery shopping, or how mucy money is spend by the average family.
The average litter size a rat may have is anywhere in between 8 and 12.