PLEASE HELP - How do I stop my shih tzu from running away

This is my little 2 year old shih tzu named Louie. He has a problem with running away at any chance he can, and every time we try to get him back he runs faster and has started ignoring the treats we give him to lure him back. Yesterday it got dangerous as he ran onto the road and into a paddock leading to horses cantering behind him. We play with him all the time, give him the right amount of food, and love him so so much. PLEASE if anyone can help please please just give me some advice because i really dont want to lose my baby 🫶🫶🫶

My dog has this bump on lower abdomen, feels like fluid.

Rash identification

What is this? How did he get it? And what’s the best way to get ride of it?