First of all, welcome to Pet Talk! You'll love it here. My Speckles does that sometimes, but I think it's because she drinks too much water too fast. She's 16 and her kidneys are starting to go and even though she's healthy she still drinks alot of water. I did speak to the vet about it but he said not to be too concerned. If it starts happening on a daily basis then I'll taker her in.

Also, I used to give her filtered water out of the fridge, but now she gets filtered water at room temp. That seems to help.