I had Momo neutered when he was about 8 months old & also had his baby teeth extracted at the same time & also microchipped. He was fine the next day, I had to carry him around to keep him from running here & there & jumping everywhere. He doesn't mark anymore
, & doesn't hump poor Mimi either
. He did have meds, Tuburol (or something like that) I only gave it to him twice...it made him just stand there & stare into space...kinda scary, for me. He ate his kibble right away, didn't have to wet it. When Mimi had her teeth extraction, she ate wet food for a week & I had to feed her! I guess boys are tough...