(iOS) My Live Photo will not send as a Live Photo.
Send your Live Photo in a file format if you want to send it as a Live Photo.

[How to send a Live Photo]
1. Press the "Plus" (+) sign at the bottom of the KakaoTalk chatroom and select "File".
2. Press "Select from Album".
3. Select the Live Photo you want to send and press "Send".
4. Press "Send as livephoto.zip" if you want to send your Live Photo as a Live Photo.

Live Photos sent as livephoto.zip will maintain its Live Photo format.