Our 15 week pup has started object guarding. If my 5yr old walks away from  her table then comes back, paisley jumps and snaps at her. Paisley dosen't try to eat her food off the table, this has also happened with my trainers, when i lent down to pick them up she went for me as well! What shall i do? (She is 3/4 shepherd and 1/4 rottie) I'm a childminder and can't have her doing anything to any minded kids, i just don't understand her! 
Toilet training worked a treat, thanks guys!
Aly x

Hi Aly - Firstly it's hard to say whether what you describe is object guarding.  Pouncing on trainers and doing an air-snap could easily be an invitation to play, in dog terms.  Again, jumping up and trying to mouth can also be an attempt to play with your 5 yr old, albeit in an unacceptable way, she may not be intentionally being aggressive.

So I'd be wary of that - sometimes people who haven't had a dog before (not saying you haven't) can misinterpret what's happening.

What do you think she's guarding, in either situation?  The food on the table?  Your trainers (although she never had possession of them - or did she have them when you tried to take them?)?

hi, she growls first then sort of jumps, growls and snaps!! she done it yesterday when she was eating and Jamie approached her bowl. i then got Jamie to feed her. she sat next to paisley and when her bowl was empty add more food ect..   the trainers were on the floor and she was kinda sat over them when ja approached, (my arm coming over the side of the chair could ov scared her though??)this was after she went for Ja!
does this help any??

Yes, that does sound like object guarding, from what you describe.

There is an excellent link to read here, with suggestions for exercises to help it:

http://www.ahimsadogtraining.com/handouts/resource-guarding.html

If you want to get a book, there is a great book with exercises to practise again:

http://www.crosskeysbooks.com/product_info.php?products_id=451