Hello , Hope someone can help .
My son took his Aussie to be castrated on Friday ,as expected whimpered Friday night so took his Aussie to the vets Sat morning and was given a pain killer and now has been told his Aussie has colitis ,watery number 2s with a small Amount of blood .

Any advice would be much appreciated .

Anaesthetic can stress the body which in dogs prone to colitis can set it off.

Small bland meals are the way to go, so boiled fish and chicken with rice or potato for the next few days, and maybe look at adding a probiotic.

Slippery elm powder/tree barks powder is also excellent for colitis. Hope the dog is feeling better soon :)

Thank you for your replies!

Went to the vets for his post-op appointment and the vet checked him over and was pleased with his recovery so far.

As for the Colitis issue, it seems it is normal due to the stress and discomfort the operation has caused.

I have been given some antibiotics for him for 5 days, so hopefully they should calm things down for him.

Unfortunately for him its a case of bland food for a few days, no treats and lots of love and hugs!!

Thank you again!

Sorry, but I really can't see how a simple procedure like castration has made such a poorly doggie.  I would not be happy with my vet if this had happened to one of mine.

And colitis needs antibiotics.

It does happen sometimes.  Anaesthetic can hit some dogs really hard, and indeed some dogs don't tolerate painkillers well - I imagine this dog was given a non-steroidal, this can trigger colitis in a lot of dogs.

Incidentally, if he does get ABs for the colitis - make sure he gets a probiotic to rebalance things afterwards.  Pro-kolin is the best for sudden onset like this.  A dog of mine had her colitis triggered by ABs, it took me a year to find out that her gut was still totally imbalanced but following a big course of pro-kolin she's back to normal now.  But she still can't have non-steroidals as she's been left with too sensitive a gut.

On a separate note, I've known a dog have an absolutely horrendous time after a straightforward castration - he reacted to the suture material, swelled up like a grapefruit down below and was very sick for weeks.  So it's not common, but it can really hit some hard.

This is why it is advisable to test for MDR1. One of my collies I used to have because of his line he did not tolerate anaesthetic very well and could cause many problems. That is why my aussies are tested.

Funny enough there is an article on the MDR1 gene in dogs today. It lists breeds that a vet college in America has found to be effected by it and how likely it they recommend it is and what drugs it can cause problems with. Worth a read.