Additional chat-related features and issues within Microsoft Teams for business
- place your mouse cursor over the gif you want to look at 2) right click and click on "copy image" 3) place your mouse cursor over the "type a message" box as if you were going to send a reply, left click, then right click to select "paste" give it a second or two for the gif to load 3) after viewing, just click on the bottom of the gif and press backspace twice to delete and continue on...
(hope that helps)