I have a cat! (For 1 month)

[Duchess]

I have another fucking cat question.

Some friends of mine are moving. I just went over to help them with some boxes and I take a look at their cat-and it has gained so much weight and its fur looks different. (dull)
They say, "Oh its been laying around all winter"
But I think something is wrong with it.
Do I tell them to take it to the vet?

I used to live with them and have a ton of pictures of this cat-I compared now to then. WHY DO I HAVE TO BE THE ONE TO NOTICE THESE THINGS?!?!

The cat is indoor outdoor cat-it could be eating birds. It could be fed from someone else also-but I have doubts about that being the cause of weight gain.

Grrrr Why don't people take their cats to the vet. : (

I had a sweet cat whose weight gain I attributed to her hanging out indoors over the winter rather than being in & out as she had always done. I never knew she was sick until the final day, she wouldn't eat or drink and her hind legs wouldn't hold her, when she would get up, she would immediately collapse. It was awful. I was lucky enough that my vet saw her as soon as I called and asked to bring her in. She was diagnosed as diabetic and didn't survive it. Urge your friends to take their cat to the vet. It might be nothing, but it could be life saving.