Already asked Furbo and they said there is NO API but a lot of devices in home assistant does not have API and they are supported. I plan to reverse engineer the App and try to catch the stream.
Furbo also does not give you an option to stream at home which is a problem for me because their servers are in US and from Bulgaria to US and back to Bulgaria its too much travel time to watch my dog.
Furbo have integration with Alexa which can feed the dog at some scheduled time. If there is Alexa. So they are using some kind of soft. Im searching also.