I used to sing to my horses too i've even been caught singing in a lift very early in the morning to myself. Luckily the witness to my madness was an early morning singer too and gave me a blast of the pirates of penzance very funny.
I have the habit of calling either of mine Son - didn't know I was doing it until the receptionist at the vet started to laugh, when I said to George 'come on Son'. Also my daughter came with Henry and me to dog training and she pointed out that I was doing there too with H. Don't care - they are my sons!