I am not a native speaker of English. I wonder whether using "it" to talk about something in a general tone is weird. In the example down below I use "it" to talk about "a tiger", not any specific tiger. I don't know if it is correct or not. Maybe it is grammatically correct but sounds weird.
Kid: What is a tiger?
Me: A tiger is a large animal that feeds by hunting other animals. It is ferocious and smart..........