I'm new here and this is my first time to ask for advice. Cleo is our kitty. She's 7 1/2 years old. Recently she's been drinking alot of water and then she'll throw it up. She has plenty of food to eat so why would she be doing this? We moved a couple of weeks ago and she was fine. She seemed happy here. Then this started happening a few days ago. If she does what she's been doing, then she'll lay down and sleep and when she wakes up she'll want to eat. But she'll do this again in a couple of days. Any ideas as to why? Thank you!