The night that Katniss and Peeta are out after healing inside the cave, they are shown walking around for a few mins and talking, at least until they hear some dog bark sounds and a guy screaming (as if this guy is being murdered) Katniss says "what was that" and then Thresh's face appears in the sky and the thunder sound fires (to let know that someone has died).
Now those dog barks i think are the mutts, the same mutts that kill Cato and it's also the same night that Cato is killed by them. As before all that it shows a group of technical people in the Capitol creating these wolf-like creatures.
Watch the film again when you have access to it, go to that scene and listen carefully on the dog sounds and the guy screaming, then watch as Thresh's face appears. I had to listen to that part 3 times before it all came to me.
Yes he dies by muttations
thresh's death was a murder
to write your own sen with thresh you can write :i saw thresh in the garden
thresh gets chased by cato into the field where cato kills thresh
The role of Thresh was played by Dayo Okeniyi.
thresh thinks katniss is a prostitute
Thresh and Rue lived in District 11
In the book, Foxface (District 5) was the 21st to die. She died from eating nightlock berries - either accidentally or to kill herself if she thought she didn't stand a chance against Cato, Peeta and Katniss. In the movie, Foxface still dies from the nightlock berries but was the 20th to die. In the movie adaptation, Thresh (District 11) was the 21st to die. In the movie, Thresh is killed by the muttations. In the book, Thresh was the 20th to die but was not killed by the wolf mutts - instead he was most likely killed by Cato.
In the book, Cato killed him. In the film, the Mutts killed him
Clove begins to shout Cato's name when she sees the rock in Thresh's hand so Thresh gets defensive. Also, Clove was bragging about how her crew killed Rue, a 12 year old tribute from Thresh's district. This upsets Thresh as well.
In the book, Thresh is possibly killed by Cato, who wants revenge for Thresh killing Clove :( In the movie, Thresh is killed by the mutant dogs who the Capitol sets loose in the arena. They eventually kill Cato as well.
It is not actually revealed that Cato killed Thresh, but it is implied that Cato did in fact kill Thresh in the books. It is assumed that it was hand to hand combat, and Cato won because he was trained and Thresh was not. In the movie, Thresh was killed by mutations. Hope this helps!