Is it safe/okay to let a dog swim in a pool like this?

[ThisIsMe]

http://www.walmart.com/catalog/product.do?product_id=4634033

I think that is about like the pool we have. I own a 2 year old ACD and a Vizsla mix puppy and i thought it would be a nice idea to let them excersize and cool down in the summer's heat. But would they poke a hole in the pool or is it even safe?

The ladder is one that you can take out. The dogs would only be in the pool if there were people in the pool/ watching them and we take the ladder out when no oneis swimming.

[Fetcht]

~ A pool like that you are very unlikely able to poke a hole in it. However, a pool the dog can't get out of easily I would suggest getting the dog a life vest that way nothing bad can happen...no accidents. With a life vest, I think the dog would love it. Mine do!

http://www.flickr.com/photos/27924453@N04/2604079707/