<human>: My husband and I have a cat we got as a kitten 6 years ago. She loves to hunt and ended up being an outdoor cat who exclusively uses the great outdoors as her restroom. This winter has been different and she has been inside for most of the past 4 months because it's been so cold and snowy (using the litterbox). 

A few days ago we had a guest over who when she went to use the toilet there was a huge wet glob of yuck in the toilet! I had just gone pee in there before we left to pick our friend up at most an hour before and must have left the lid up. The friend who has had many cats said that it was the biggest cat hair ball she has ever seen! I have never seen a hair ball so I took her word for it. Does this sound likely? Was that a hair ball the cat managed to yak up into the toilet!? Is there more I should be doing for my cat's health so this doesn't happen again?

Can you summarize the given text in a few sentences?
<bot>: 6 y/o cat yacked up a huge hair ball into the toilet for the first time. What should I do differently if anything while she is stuck in-doors until the weather warms up?