A 10-year old German Shepherd presents to you with the complaint of licking the anal area and scooting. On examination, you find numerous ulcerated tracts in the perianal area that are draining purulent fluid. What is the diagnosis?
A- Anal sac abscess
B- Anal sac impaction
C- Clostridial colitis
D- Perianal fistula
answer/D
