Expert: Walter Hintz - 1/9/2011

Question
QUESTION: i am doing a science fair project and i need some advice. my experiment is which grows more bacteria: cat saliva, dog saliva, or cat saliva. any suggestions on how to make my experiment a quality project??

ANSWER: Hi Nicky
In order I need to know some things.
Do you have the necessary resources needed to grow bacteria.
Do have the animals needed to get the saliva.
Do you understand the scientific method.
What grade level are you in?
If so then you have to make a hypothesis and design your experiment
 Get back to me

---------- FOLLOW-UP ----------

QUESTION: i am getting auger and the day i start the experiment i will have the animals.
i am in the 8th grade so yes i understand the scientific method.
right now all I'm worrying about is getting my research paper done.
from your opinion which saliva do you think will have the most bacteria after 1 week: dog, cat, or human?

Answer
Let me know when you design your experiment
I believe form past experience that there will some differences in the kinds of bacteria but little difference in the quantity
Also you are introducing too may variables here. You should use only a cat or dog, Not all three