Please give options for sounds

I love messenger and use it almost exclusively to talk to many of my friends and family. The only thing I cant stand about it is the "ding" it makes. I actually have to turn my sound off if my dog is in the house. He has an electronic boundary collar and if I get a couple of messenger notifications when my sound is on, he completely freaks out! Poor puppy!!

GVmommy about Messenger, v123.0