Added entry for cowshark.

cows/cowshark.json

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+{
+    "name": "Cow Shark",
+    "breed": "Squalus Taurus",
+    "image": "images/cow_shark.jpg",
+    "description": "Incredibly rare and exotic cow breed found in the Swiss Alps. Their milk is known to taste slightly saltier, but the meat tastes of high quality wagyu, if not better. Recent sightings show evidence of grazing in the Cascade Mountains."
+}