Bridge collisions are nothing new: "In the period from 1960 to 2015, there have been 35 major bridge collapses worldwide due to ship or barge collision with a total loss of life of 342 people." Here is another report from the 1980s.

I can remember many decades ago now hearing about dogs causing serious injuries. Back then, in the UK, the "bad dog" was always an Alsation AKA German Shepherd. After that report the MSM would be full of dogs biting people but over time the stories would fade.

Basically, we are hearing about every bridge collision now because of the Baltimore one but they happen all the time. They were just not newsworthy enough to report.