These are the best cold weather sailing gloves I have used:

http://atlasfit-solutions.com/atlas-gloves/chemical-protection-gloves/atlas-460/

They are waterproof and fleece lined- great for judging, umpiring, pulling marks, and frostbiting.

Unfortunately, I don't think they would be great on a cat as it is easy to get water down the top, and then you are kinda screwed. I haven't tried putting a drysuit seal over the cuffs, might work.

I also know a lot of New England college sailors would wear these: http://atlasfit-solutions.com/atlas-gloves/multi-purpose-gloves/atlas-451/

They would also layer a pair of dish-washing gloves under the Altlas gloves to provide a waterproof layer the goes inside the drysuit seal.

I have also used ski gloves while crewing on an interclub for frostbiting, but they wouldn't hold up to trimming.