Naughty toddler throwing things at the dog

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I've posted this in behaviour, but thought as most people here are dog owners they may have had the same experience with their toddler?

My DD is 16 months and has decided it's a fun game to throw things (books, toys etc) at our dog. She also hits her, not in temper, but for fun. Obviously this is unacceptable, I don't want the dog turning on her, although fortunately for the moment she just walks away. I don't really know what to do! At the moment whenever she does it I put on my loud authority voice and say NO whilst getting down to her level, but she just BEAMS at me (little shit ) Does anyone else have any hints/suggestions?

Training dogs is similar to training kids IMO so I would suggest removing her from the room. I used to use a naughty step for my kids but they have outgrown that now at 9 and 12 lol
I guess 16 months is quite young for her to understand though. How about taking the books or whatever away out if reach but within sight. A short sharp no and then ignore.

Goldfish are much easier to control rather than kids and dogs!
Good luck

What are you doing while she is doing this? By that I mean is your attention elsewhere? I only ask because my DS will do this if I am not concentrating on him! He has worked out that it is a surefire way to get my attention.
I can't say I have a way to solve it, though I'm working on it! I do put the dog away sometimes with a chew toy or something, just to give us all a safe break apart. I have tried removing him from the room if he hurts the dog, but to be honest it doesn't have much effect. At the moment I am concentrating on praising him when he does something right. I am involving him more in doing nice things with the dog too- giving her treats (I have him drop them on the floor in front of her though), throwing a ball for her in the garden, brushing her (all under supervision of course!). I hope that being positive about doing nice things with her might help him bond with her more.
It really is difficult for a toddler to know that they're hurting someone/something else. they just know it's getting a reaction, and that is interesting to them.

Thank you for the replies! Yes I think she does view dogs as a rather fun toy, she loves them to bits and insists on making sure she sees them both first thing when she wakes up!
ellangirl It seems to be random to be honest, she does do it while I may be doing something else (while still in the room, eg dusting) however she does also do it if I'm playing with her and they just happen to be walking past. She seems to choose one dog in particular to do it to (fortunately my ever patient border collie!)
I'm worried that she's so young she doesn't really understand that I'm telling her off, but my poor dog must be getting fed up!