By Tom Gillespie
Photographer Greg Morgan had been following the cubs for five to six weeks when he captured the images in June.
“Quite often they will be squabbling playfully, but sometimes there is a bit of an edge to it when they are trying to assert their dominance.
The 44-year-old, who lives in Walthamstow, took the photos on two different days.
“Then they will start chasing each other and trying to get one over on each other.
"It all happens so fast and totally out of the blue."