Why did my normalwinterwhite jump about before he died?

um this may sound a bit harsh but if he is dead already he was probably twitch animals do that if youve heard you can cut of a chikens head and it will still run around well your hamster could have been dead moments ago and was twitching or he could have been flinching in pain either one (sorry for all the hrash stuff i know what its like to have animals die i live on a farm and its terrible my favorite pets die all the time) also dwarf hamster can sometimes have problems with emune system and stuff it wasnt your fualt he died drawf hamsters dont live a long life truely i have a dwarf kitten and its probably gonna die soon :'( but dwarf hamster have problem and live a short life so it wasnt your fault that you didnt take him to the vet even if you did the vet couldnt have prevented it from happening so its not your fault