I thought I would tell you how taking my 6 month old chihuahua puppy to the lake almost killed her. My husband and I were planning a float trip in our Kayak... and part of that plan meant making sure Jesse, our 6 month old chihuahua would be safe... we bought her a life jacket and in late June we took her out to one of our local lakes and gave her a test run. She loved the kayak and didn't mind the life jacket. It fit her okay and we stopped at a nice little spot and got out of the kayak and taught her to swim with it on. I wouldn't say she liked it, but she did figure it out and the vest kept her head well above the water. So after about 5-10 minutes we put her back in the kayak and headed back to the truck and went home. That was on a Saturday. It made her tired which did not surprise me but she continued to stay tired for days and by late Tuesday evening she began to have loose stools. They were not runny, just a little soft and she slept all day. Then she woke me up at midnight because she had diarrhea in her kennel where she sleeps. She had never messed in her kennel, not even as a baby. So I took her outside and cleaned up her bed and she went back to sleep only to wake me up at 2am. This time I stayed up with her. She continued to have the runs all night long until by morning her stools were bloody and I took her to the vet the minute they opened. Jesse weighed 4.12 pounds at the vet the week before and that morning she weighed in at 3.06. She had lost 1.06 pounds over night. That was 25% of her body weight and a dangerous amount! They kept her and put IV fluids and ran test and started antibiotics. The began looking for everything and anything from Parvo to Giardia to E-coli. She would stay with the vet all day on IV fluids and come home at night with the IV capped off. I was so scared she would die because she was so tiny and they could not figure out what was wrong with her. By Friday she was looking better but we still didn't know what was wrong with her. We had spent all of our float trip money on the vet bills (well worth it) and we still didn't know if she was going to be okay for sure because we didn't know what was wrong. Though things were looking lots better because of all the fluids she had been given all week. She continued to improve over the weekend even without the benefit of fluids, though she was so skinny. Then on Monday the vet called to say he had some test results. She had picked up Clostridium Difficile, a bacteria similar to E-Coli and he suspected it came from the lake water. We never saw her drink the water but she could have ingested some while swimming. <sigh> So... we are going to wait until she is a little older to try again with water based activities. Her doctor said that this was probably a fluke and that she should be okay once she fully recovers. But we don't want to take any chances since she is so small at just 4 pounds once her weight is back up where it belongs. Which it is as of this past week by the way! Here she is when she wasn't feeling so well... And when she is doing better It is amazing to me to find out that I love this little baby so much! I thought that kind of love was reserved for my human babies... but it isn't. She is so special to me and I love her and baby her so much I am sometimes embarrassed to admit how much. I am starting to think that God made little creatures like this for us to care for when we are really too old to have babies at home any longer but not too old to mother things and to do it well... Seems logical to me. I hope this information helps someone to realize that a sleepy puppy may be more than it seems. Blessings to you all.