You are presented with the question "what species has a negative impact on population size when they are harmed?" and the following answer choices: 
- clouds
 - water
 - humans
 - Bats
 - aliens
 - Cars
 - dogs
 - squids

Now knowing that harming an animal species has a negative impact on the population size of that species and all dogs are animals , choose the best answer.


 

       dogs  