Do dead food (which are animals) not have rigour mortis unlike humans?

Factual Questions
1

Dear Cecil

As you know, when a human dies, rigor mortis sets in several hours later. This is due to the muscles freezing up or something. So why do we not see this in animals (besides putting them in freezers). Taking that animals also do have muscles to do work, why do they no appear to have rigor mortis after death?

singaporean15

2

Muscle tissue relaxes again after rigor mortis. You never see food that is within the window of rigor mortis. This article (which was the first that came up when I Googled rigor mortis) explains the chemistry and timeline.

3

Una addressed this to some extent here. Welcome to SDMB.

4

thanks for your replies! this is a cool site! (: