Pretty common project, but once again, he uses a computer which was discontinued 5 years ago & now costs $200. The results are better tracking of teddy bears than lions.

The lion kingdom has had really good results with the mechanical leash.  https://hackaday.io/project/188284-smart-leash

The future depends on low cost analog solutions more than neural networks.  Low cost neural networks are never going to happen.  They're going to be relegated to $100,000 cars.