i have had no problems with my puppers and water....my oldest staffordshire terrier is in love with water if i turn around to go pick something up and he is swimming i will turn back around and he is in the middle of the lake swimming in circles and the same with my other one...but she likes to dive for the rocks at the bottom it scares the crap out of me because she is under the water till she gets that darn rock....and my chihuahuas as soon as break up comes (my yard floods every year) they are out in the yard swimming and it is kinda funny because they like to roll in the mud when they are done with it.....man i guess i am just lucky to have dogs that love the water....but im kinda nervous to see how my marley does with the water because this will be her first summer.....