We have a fence and we live on a golf course so as soon as Bailey could get around she was chasing after those golf carts from in the fence(and still does)
she likes to protect the territory. But we noticed one day after Bailey was outside for about 5 minutes by herslef, we see no Bailey. We call her name, no response. Then I see her little pink harness shining in the light out on the golf course! Shes over by the pond sniffing away! It was a long run to go get her too, and then ofcourse she thought it was a game. After laser pointer and treets we managed to get her back in the yard. So we decided that this was not going to go on any longer and we bought chicken wire and secured it around the fence on the bottom and top so she cant get out. THAT GOT HER! She has never tried to get out again.But refering to the question, i dont suggest an electric fence for the tiny babes!