How can I pause animated GIFs in Messages.app on macOS?

I have a group message where my friends and I enjoy sharing animated GIFs. Sometimes, when one of these stays on screen for a long time, it will eat my CPU and cause my fan to spin up/make noise. I enjoy the GIFs, but in order to keep my fan quiet, I often delete them, which reduces the CPU usage. **I have a hunch that if I could pause the animation, it wouldn't use as much processor power. Is there any way I can do this?** *I'm currently on OS X Yosemite (10.10.3) and using Messages 8.0 (4752)* *Edit by Tetsujin Aug '17* The bounty I'm offering isn't for the same reason as the OP, i.e. CPU, but merely the irritation factor of watching them go round & round & round ... & round...