Q. My dog just had a operation two days ago he had tumor on his spleen remove today his vet is close he has red rash on his stomach he seem to be inpain
A. Sometimes the scrubs they use for surgery can be irritating. If they gave you pain medication when he was sent home, use the instructions they gave you to administer pain medication. Its natural to have some pain after surgery but if you feel that its very bad, you may want to visit now as he could have some sort of complication. If you think he is ok to wait until morning, give your vet a call when their office opens in the morning.