I support, but someone could argue.
There isn't an alert system for when your creatu get hungry, because, if you really cared enough, you would check on them and your food pen whenever you're online. Someone could also argue that there is no easy way to send out alerts if your creatu is hungry, because they get hungry at different times, and then your alert box would be full of "this creatu is getting hungry!" or "This creatu is starving!" and if someone sent you an rmail, you would never know.