One of the villains threatens to shoot a dog, but Bosch rescues him. Later on in the season the dog is brought to Bosch’s home as he wants to adopt him. At another point in the season Bosch’s home gets invaded by the villains and at one point looks like the dog will be shot, but he doesn’t. He runs away, but later comes back home to Bosch. The dog has a very happy ending :)
Bosch has one of his cases gets reopened due to new evidence, and the victim was a woman who was sexually assaulted and killed. We do see her naked body, but from memory, they never go into detail about what happened to her, other than the sexual abuse.
The mother of a six month old baby is kidnapped during the day. The baby is found still in its pram by her car crying by a jogger at dusk. It is upsetting and quite distressing to listen to but the baby is ok and taken to a children's hospital to be checked and reunited with dad (not shown but we're told in the news story)