on pet care - mainly on rodents can a 15 yr old have a book published?

yes you can be published
you just need an amazing novel
Age doesnt matter in this case

Nobody is going to buy your book, quit while you're ahead.

do it!

Ill read it:)

Go ahead.

Before committing to this I hope you realize how difficult writing a book truly is. Its going to take a lot of time to research the subject throughly, the only thing worse than a crappy book is a crappy book that attempts to use inteligent language and teach you something but do it in a completely incorrect way.

Paolini began writing 'Eragon' when he was fifteen.

A 5 year old can get a book published if they're intelligent enough. Age means nothing, it all depends no how you write.