1. Open your Snapchat app and click the 'Chat' icon to the left of the camera icon at the bottom of your screen. Choose a friend to start a message.
2. Tap the 'World' icon on your keyboard (or 'GIF' icon on Android) to bring up Tenor GIF search. Type in a keyword and find the GIF you want to send.
3. Tap the GIF to copy it to your clipboard, press and hold on the chat box and paste the GIF to send.