My mums dogs also used to sing (howl) along with sirens going past.... one would start and they all would join in.... its awkward as she lives on a main road.... however after living elsewhere for a while whilst the house was fixed they have come back cured of this :p Now they don't sing along any more.... :(
One of the dogs will just keep bringing a toy to you to get you to play with it. She doesn't give up and will keep going all evening. My mums partner puts them behind his head and ends up with a rather large collection :p
