How to write a letter to your neighbour for the Inconvenience caused by your Pet

Apology letter:

 Dear sir,

I heard from my son that today morning our cat ate up one of your chickens. This is in fact unfortunate and I apologies sincerely for the life caused. Our cat is usually well behaved and I cannot imagine what got into her. This morning, Moti has been properly punished and I am sure it will not bother your chickens  again. I have asked my children to keep an eye on Moti and see to it does not cause you again your any inconvenience or damage in future.

I am sorry for what has happened.

Yours friendly,
(your name

How to write a letter to your neighbour for breaking the window panes

Apology letter  :

Dear sir,

I have been told by my wife that one of your window panes have been broken by my son while playing cricket. This is indeed regrettable and I apologies sincerely for the damage caused unfortunately we do not have a playground in our locality and children have to play in the streets and court yards. Any way, I would feel relieved if you get a new window pane and charge me for that. I solicit our forgiveness.

Yours Sincerely
(Your name)