90lbs is pretty big for a pit bull, but hey don't let that stop you from calling a big dog a pit bull.
Anyway, Long Beach police were getting their suspect chase on - reports stated there was a random guy running around with a knife. Not knifing anyone, just clearly a bit unstable.
Police responded and then were all hey let's go into this person's yard! So they go into this person's yard and are all holy crap, there is a dog here! and respond to the dog's presence by shooting him four times!