My grandparents are 84 and 85 years old and don't act it. They drove 5 hours to see us and bring me some living room furniture that they bought me (long story). Anyways, they just got in and my grandfather was carrying the pieces inside and I told him to wait but he's stubborn and there is no arguing with him.
Anyways, I was holding Smokey so he wouldn't run out the door and was talking to my grandmother in the kitchen. My grandfather walked into the next room and apparently lost his balance and we didn't hear him fall. Next thing you know, Chip starts barking in the next room. I didn't think much of it because he does that same bark with people he doesn't know well, so I figured he was just barking at my grandfather because he's unsure of him. Well after a couple seconds of listening to Chip bark my grandmother calls out to my grandfather and he didn't answer (hard of hearing). We decide to check on him and sure enough, he is on the ground. He wasn't hurt or anything (thankfully!) but he said when he fell Chip got right in front of his face and started barking at him. When we came in Chip was a couple feet away, barking directly at him. He was alerting us that something was wrong! I'm so proud of him and I'm glad my grandfather wasn't hurt!