Background A 34-year-old, captive-born, vasectomized male chimpanzee (Pan troglodytes) presented with lethargy and scrotal swelling.
Methods Urethral obstruction was diagnosed via urethroscopy.
Results Removal of the grass stem foreign body resolved the obstruction. Scrotal and preputial ulceration developed from urine scald, which was managed with surgical debridement and antibiotics.
Conclusions After 7 weeks, the animal was reintroduced to its troup and has been healthy for 11 months.