erms, if you report, they will euthanasia the dog.
its rather cruel, so maybe you can ask your friend to think twice
and warn the neighbour to eye more on the dog again and if it
happen again, then report to ava or police lor.
Actually they wont put the dog to sleep for just biting ppl. You
are right to say its cruel to put the dog to sleep, as the person
responsible for this is the owner, not the dog. So by reporting
this to the AVA, at least you are highlighting the problem to the
authorities, who would fine the neighbor for not muzzling
their dog.
At least do some action ma. Now is the mother kena bite, later
old ppl or children kena bite even worse lor