Just One Litter
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Just One Litter Many owners want their pets to have “just one litter, then we’ll get her fixed”. Do you know how many new puppies are produced over time because of “just one litter”? Let’s figure it out…
“Princess” had a litter of puppies. There were 7 in the litter. 3 of them were males. How many were female? ______
A year has passed and Princess’s daughters are all grown up. Their owners want them to have “just one litter” too. If each of Princess’s daughters has a litter of 7 puppies, how many will there be? ______
Now that all of the puppies, Princess’s grandchildren, have been born the owners see that half of them are female. How many is that? ______
Another year has passed. There were ______female ‘grandpuppies’. Also, 2 of Princess’s daughters were never spayed, so they are pregnant again. How many dogs are currently pregnant? ______
Each of the pregnant dogs had 7 puppies in their litters. Now how many new puppies are there? ______
How many years have passed since Princess had her litter? ______
In those ______years, how many total puppies were born (male and female)? ______
Wow! Look at the total number of dogs produced because Princess’s owners wanted her to have “just one litter”.
Where will all of these puppies live? What happens if people keep letting their pets have “just one litter”? What if their pets have a litter every year? Even though Princess had “just one litter”, then her owners got her sterilized, did that help prevent pet overpopulation?
Vocabulary: Litter Spayed Sterilized Overpopulation CCS-FRM-554 Effective Date 10/8/2009 Rev 1 Princess Princess’s puppies After 1 year…. Princess’s grown puppies After 1 more year…. All of Princess’s female ‘grandpuppies’ and 2 of Princess’s grown puppies that didn’t get spayed CCS-FRM-554 Effective Date 10/8/2009 Rev 1
CCS-FRM-554 Effective Date 10/8/2009 Rev 1