they would die or roam around.
The rodent population would swiftly diminish !
There would become an over population of small rodents and insects
Snakes prey on rodents and insects. Many of these rodents and insects are harmful to food crops or carry disease which can affect humans, beneficial plants, and animals.Snakes have many uses to enviroinment .So killing snakes affects the enviroinment.
Any food chain or food web that included snakes would be affected. The animals which the snakes preyed upon would no longer have that population control and could overrun their niche.
If there were fewer rabbits, mice, and snakes in a given year, the owl population could face significant challenges due to reduced food availability. As owls primarily rely on these small mammals for sustenance, a decline in their population might lead to malnutrition or starvation among owls. Consequently, this could result in decreased reproductive success and higher mortality rates, ultimately causing a decline in the overall owl population in that area.
if the snake population decreases (meaning there are less of them) the rabbit population will increases (meaning there are more of them) all do to the rabbits not being consumed by the snakes.
Most predators who mainly depend on the rabbits minerals, fibers, and meat would be extinct. Lots of carnivores mainly eat the rabbit.
snakes
There is no such condition as 'mad snake disease' !
Nature is like a system in equilibrium. If a change in any component nature, quality or quantity is imposed on it, it will try to suppress that change and try to nullify it. So if the number of rabbits increase that change will be nullified by many factors other than predators. Diseases, shortage of food etc. can happen. Also, the increase in the number of rabbits will provide a good habitat for the snakes and thereby help in more breeding. But this will happen only up to a particular limit after which there will be no more change.
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They would adapt to eating other animals. Not ALL snakes eat mice anyway. Rats, gerbils, rabbits, hares, birds, antelope and cayman are amongst the animals that snakes eat depending on their size.