Casey has been sort of lethargic today, which I chalked up to the warmer weather. She ate her food same as usual this morning, and had two normal bowel movements (one first thing in the morning, the second at around 11:00). She had a fair amount of water throughout the morning/early afternoon too. I gave her a kong around 1:30 and she didn't eat it; wasn't interested at all, which is unlike her.

We went to the dog park at about 2:00pm and that's when I noticed her acting a bit differently; she's usually very lively and runs up to every dog, but today she wasn't as interested in playing or running. She did end up running and playing a bit, but was definitely less enthusiastic than usual. Again, I thought it was just the heat (we don't usually go to the dog park mid-day). She had some water before we left the dog park (from a bottle and dish I bring for her) and then when we got home, she had a small amount of diarrhea in the backyard. We went inside and she had some more water.

She spent the rest of the afternoon just napping/relaxing. I put her in her crate while I ate my supper, and at around 6:45pm she threw-up her breakfast in her crate. I cleaned that up, and we went outside to see if she had anything to do, but she just peed a little. We came inside and I put a bit of her kibble in a bowl to see if she would eat. She just played with it a little, but didn't eat any of it. I thought a bit of fresh air might help, so we went for a very slow, short (5 minute) walk around the neighborhood. As we were walking, she suddenly stops in the middle of the sidewalk and has some very runny diarrhea. After cleaning that mess up, and cleaning her up, she's just laying on the main floor on her dog bed (with water near-by that she hasn't had any of in a while).

At what point should I be worried? I was thinking that I would wait overnight to see how she is tomorrow morning, and to see if she'll eat her food/water tomorrow morning like usual.

I'm a bit nervous, I hope it's nothing serious!