Lighted geofenced dog collar project help needed
I would suggest the following hardware for your project.

https://store.arduino.cc/arduino-mkr1000  

It has an integrated wifi module. If a wifi chip is attached to chip manually it will likely loose contact or sometimes be broken during movement.

Here are some tutorials to get you started:


https://www.hackster.io/charifmahmoudi/arduino-mkr1000-getting-started-08bb4a
https://www.pubnub.com/blog/2016-08-23-remotely-configure-your-arduino-mkr1000/
http://platformio.org/lib/show/299/WiFi101


Hope this helps.