Man's best friend is being drafted into the war on wildlife trafficking in Africa. Tanzania, Kenya, Uganda and Mozambique have all enlisted canine rangers to help detect illegal wildlife contraband, in particular ivory. And now, Botswana is joining the trend. The country is home to Africa's largest remaining population of elephants. Ten new canine rangers, along with 15 Botswana handlers, are completing their training in Tanzania. Lenny Ruvaga reports for VOA from Arusha, Tanzania.