Kirk's dik-dik

Would you believe that this tiny antelope (common to East Africa) is only about 12 inches tall? It has a long tubular snout through which its blood is pumped to help cool its body (nasal panting). That snout can also be used as a whistle; the shrill noise it makes sounds like "dik-dik" hence its popular name.

I believe this species is Kirk's dik-dik (Madoqua kirkii). I captured this image in the Tanzanian Serengeti last year.