Charley the Dog Timeline and Summary

Charley gets in the truck with Steinbeck and hits the road.
He gets a really nice grooming job in Chicago, but he's annoyed to be boarded while Steinbeck hangs out in the big city with his wife.
When he visits Yellowstone, he loses his cool when he sees a bunch of bears, and Steinbeck has to take him out of there.
In Spokane and Texas, he has some prostate problems, so Steinbeck takes him to the vet. The first vet isn't super-helpful, but the one in Amarillo is. So, Charley gets all healed up.
When Steinbeck decides the journey is over, they head home to New York.