Male boxer behavior

Question
I have a 4 1/2 year old male boxer.  For the past 2 days he has been whimpering and howling no stop.  Needless to say I can't sleep.  I took notice of a female yellow lab that comes around our property often.  Every time she comes around he start jumping around and getting excited.  So I took him outside and he wouldn't stop trying to mount her and mate with her.  So I tied him up outside for a few hours to let the two of them have fun.  Now he won't eat at all.  I have tried everything to get him to eat and he won't.  Is this normal behavior for a male Boxer?

Answer
No, it is not normal behavior to stop eating.

I don't know where you live-- but you CANNOT tie up a Boxer outside!!!!!!!!!!!!

They CANNOT tolerate temperatures over 76-77 degrees.

You might have caused him dehydration or worse, heat stroke.

Get him to your vet ASAP!

As far as the howling -- it was due to a female in heat.

Get him neutered.