It was never revealed, but it was hinted to be of sickness.
Thrushpelt was a ThunderClan cat who was deeply in love with Bluestar, then Bluefur, though until Rosetail, an elder, pointed it out, she was oblivious to it, probably because she was secretly in love with Oakheart. When it was rumored that he was the father of Mosskit, Mistykit, and Stonekit, he kept her secret. He always loved her, and they were great friends. Bluefur nearly started the whole isolation from the rest of the Clan when he died, which would be very bad.
Robinwing's Mate was Windflight A windclan, Thunderclan cross
He doesn't die.
As of the warriors book Sunrise, Hazeltail has not yet died.
by a beaver.
no
Spiderleg did not die yet in the series.
Fuzzypelt in Warriors? Becaue in Warriors, he dies of old age in the elder's den...., but if not Warriors, then I don't know what the muffins you are talking about...
No he will not die in Long Shadows.
No he will not.
There is no Jigsaw in Warriors!
There is Lightningtail, Owleyes, Vinetail, Stonepelt, Brightspirit, Gorseclaw, Spottedpelt, Braveheart, Sweetbrair, Swiftbreeze, Thistletail, Thrushpelt, Weedwhisker, Prickleface, Robinwing, and Adderfang.