Graypool,Brindleface,Snowkit,Swiftpaw,Crookedstar, and Bluestar die.
The Dog Pack leader and the three of The Dog Pack members also die.
Bluestar dies on page 400 in "The Dangerous Path".
The young pretty she-cat named slverstream, dies. From: squirrelflight
Cloudpaw dies in a battle with BloodClan, a group of rogue cats, while trying to protect Fireheart, the leader of ThunderClan. Despite his efforts, Cloudpaw is killed by one of the BloodClan cats, marking a tragic end to his young life.
Honeypaw dies from Greencough, a fatal sickness that affects cats, in the Warriors series by Erin Hunter.
Well, there has to be some romance and tragedy to be exciting.
In the series warriors by Erin hunter I would have to say there is more than one but I'l list them Forest of secerets, series 1, Silverstream dies A dangerous path, series 1, Bluestar, swiftpaw, die and brightheart badly indured Twillight, series 2, Cinderpelt and sootfur die and all cats of thunderclan badly indured sunrise, hollyleaf tells all the clans leafpool's secert,brambleclaw is mad leafpool leaves thunderclan hollyleaf dies
In the book "Twilight" from the Warriors series, Birchfall dies from injuries sustained while trying to protect ThunderClan from a badger attack. His death greatly affects the Clan and serves as a reminder of the dangers they face in the wild.
Bluestar losses her last life at the end of the 5 book (A Dangerous Path) in the first series.
In "Fire and Ice," the cats that die are Redtail, a ThunderClan deputy who is killed by Tigerclaw, and Whiteclaw, a RiverClan warrior who dies in a battle with ThunderClan. Additionally, Frostfur's kits are killed by ShadowClan warriors during a raid on ThunderClan camp.
He dies when frieheart is trying to make it to yellowfang. Yellowfang is the medicine cat. But medicine cats cannot have kits. So she gave up brokentail. Brokentail began to murder other clan cats, so yellowfang fed him death berries.
Brindle face is killed by Tigerstar to give the dog pack a taste for cat blood Bluestar also dies trying to defend Fireheart from the dog pack and she is thrown off the edge of the gorge along with the pack leader
No one.