CASTRATION - (The Male Desex Operation)
Anaesthesia is performed in the same manner as for the female desex operation overleaf, with the exception that in the male cat, gaseous anesthesia is generally not required as it is a relatively brief procedure (intravenous or intramuscular anaesthesia is used) not requiring sutures.
In the male dog, a single incision is made in skin ahead of the scrotum to remove each testicle; the spermatic cord and blood supply are ligated, and sutures may be hidden or buried especially in large breed dogs as they are more prone to licking postoperatively.
The scrotum is not removed, and over time this gradually shrinks to be almost invisible. However, in the week or so following surgery it is normal for the scrotum to be slightly swollen with residual blood filling.
Again, the anaesthetic monitoring and postop analgesia is identical to the female desex procedure.
Many owners are averse to desexing their male dog, worrying that he will change personality and/or gain weight. These fears are unfounded, as the only character traits that are influenced are those driven by testosterone, ie, the traits that are usually unwanted, such as jumping the yard fence, mounting behaviour, excessive barking, urinating on backyard furniture, aggression to other dogs and possibly people. Tendency to obesity is totally controllable by not overfeeding your dog and being aware that time of desexing normally occurs at the age when the growth spurt is slowing and once daily feed times should be introduced for most dogs except perhaps for giant breeds.
Non desexed males are very prone in later life to prostate disease (especially non cancerous hypertrophy) and constipation, tumours of the skin around the anus, and tumours of the testes. Testicular cancer is a particular risk in those males that are "cryptorchidb, a condition where one or both testes have not descended into the scrotum at or soon after birth. It is strongly advised to desex dogs and cats with this condition when young.
Depending on the location of the "retained" testis, the surgery for cryptorchid animals involves extra time in surgery, and costs will vary accordingly, as an abdominally located testis will require a similar procedure to the female desex operation.