Is This Dog Singing Britney Spears' "Toxic"?

IDK. Yes, I "hear" it but being a dog owner my whole life I can tell you that dogs make some pretty weird noises sometimes. I mean, you know! So is this dog belting a Britney classic? You be the judge! 

When asked Matt said 

"At first I thought he was just howling at the storm that was rolling through, but when I rewatched the video, I noticed that the sound he was making was oddly familiar, After watching it like 30 times, I actually said out loud, 'Oh my God, Riley, were you just singing 'Toxic?!' and then I proceeded to freak out. He looked at me sideways at first, then jumped in my lap."