I have also found this to be true. 2 symbols seems to be key for helping with voice commands. It also allows for easier change of tone while saying their name which they respond to better.RavingPenguin said:Ive always found dogs with 2 syllable names easier to train. So I tend to follow that rule.
Right now the names I got are Neko (ironic), Keiji, Aztec, Peanut....
Thats all I got now.