Henry getting a feel of the wild

My Dog Henry seems to be addicted to watching Discovery channel. This is in spite of me reducing the volume to check if it is the sound that is attracting him to the TV. He does not watch anything else on TV. Only watches Discovery, Animal….. Only shows about animals. He likes it when animals move quickly from one side of the screen to the other. He does not find birds in groups interesting. Wonder if he knows what animal he is looking at. He does try and sniff them!