That isn't a terribly useful way to "kick" a watchdog.
It just shows you that the processor is accessing external memory - it might be stuck in a loop, it might be overwhelmed by spurious interrupts, it might be executing junk in "unprogrammed" areas of ROM, it might be accessing invalid areas of RAM.

You should "kick" the watchdog from your code in such a way as to guarantee that the "kick" can only occur if everything in your code is working properly; ie, the dog will "bite" if anything stops working (or "hangs").

Note that no live animals are harmed in this process!