My mother used to sing this.

The version I wrote down is very similar to the one in the Digitrad, with a few differences

In verse 2 line two, The gamekeeper was watching us, for him we did not care

Verse three line three We put her into a bag my boys and through the wood did steer

Verse four line two We called into a neighbour's house and sold her for a crown

Verse five begins Now I do favour poaching I think its very fair.

One thing I noticed - the hare is called 'he' in the two versions, but hares are called 'she', or puss - at least by country folk.