Aawwww poor thing! Dogs always try to stay 'tough', but it's a good thing you noticed something was wrong!
I can imagine a pet dog is just like having a kid and it's so hard to see your children get sedated. It makes you feel so helpless.
Glad to hear Brooklyn is back in action! Probably lots of tail wagging coming up ;)
Lol these days during gathering with friends, everyone's carrying a human child, except me .. :p
Don't worry good things will manifest at right time.
Have a great day and stay blessed.