history: I was walking my dogs and a guy had his dog off leash, and it ran up and freaked out both of mine. I was walking my dogs the other day and a guy came out with his dog off leash.  The dog ran up and freaked out both my dogs.
current: That must have been scary. It could have gone really badly.
next: Yeah, I was really worried.  My bigger dog got really protective of the smaller one, but thankfully they didn't actually get into a fight.