Translation:A dog is climbing a tree.
Kanji symbols often have multiple pronunciations, "On yomi" and "Kun yomi" (Chinese and Japanese readings).
For 'tree', the Chinese reading is 'Moku', and the Japanese reading is 'Ki'. If Kanji are combined, we tend to use the Chinese reading, otherwise we generally use the Japanese one.
When i was a child, my aunt had a rottweiler mixed with a bassethound. The most beutifully strange animal in the world! I rememer he had a bunch of extra toes, and also loved to climb the big old cottonwood tree in front of her house! It really was an amazing thing to see. Granted, he could only get about eight feet up.. Still, considering he was only a bit over a foot tall at the shoulders, it was still a pretty impressive thing to see, (in my book at least)!