What if all Cats suddenly Disappeared? | #aumsum

It is estimated that there are about 600 million cats in the world.
Now if there were to suddenly disappear:
Firstly, hearts of millions and millions of people who love cats will surely be broken.
Secondly, rats and birds will definitely throw an after-party. Significant number of rats as well as birds fall prey to cats each year. It is estimated that cats kill about 3.7 billion birds annually in US.
Now in the absence of cats there will be a significant jump in the population of rats and birds. It is difficult to estimate the effect this will have on the food chain as well as on the ecological balance of nature.
Lastly, Tom will be dearly missed by Jerry.

References:

aum,aumsum,aum sum,it's aumsum time,smart learning for all,education,science,Secondary School (School Category),animation,school,learn,learning,kid,kids,children,What if all Cats suddenly Disappeared,cats,cat,what if,what,if,