The mayor of Cranbrook says it may be necessary to kill deer inside the city limits.

The animals are becoming very aggressive as they fawn.

A recent You Tube video shows just how aggressive the deer can become.

Millions of people have watched the clip, which shows an aggressive deer attacking a dog and cat in Cranbrook.

Deer have been a constant concern in the city and mayor Scott Manjak says a cull could be the only way to solve the problem.