To be clear, your claims are: 1. An increase in the population of predators will have no effect on the population of the prey. 2. Rats don’t shit and/or aren’

To be clear, your claims are: 1. An increase in the population of predators will have no effect on the population of the prey. 2. Rats don’t shit and/or aren’t attracted to food. Are you speaking in jest or do you actually believe those? The fact that your second statement directly contradicts your first doesn’t help.