What are the common problems with unneutered male dogs?

He will have the urge to escape the yard when female dogs in the neighborhood are in heat.

Then you’re neighbours will be dumping puppies on you.

Leg Humping

Aggressive behavior
Marking
More difficult to train

Do neuter them: for yourself, for them, and for all of your neighbors.

Higher risk of prostate cancer.

Were his previous owners using him to breed? He’s not too old to get neutered, I’d do it as soon as you can.

@theartfuldodger ~ lurve for cojones

Seriously though, I would add just a general preoccupation with their penis, as in excessive er… grooming. That and, anytime they get excited/aroused their lipstick pops out. Ewl.

Indiscriminate breeding.
Fighting.
Odoriferous, oily urine.
Territorial urine marking.
Woodies and peepee schlurping.
Cross species humping (“Look out, Gramma!”)
Schmegma.
Enlarged prostate, abscessed prostate, prostate cancer.
Ugly, dangling old dog testicles.

@syz : I lol’d.