I learned the hard way they can swim, 9 1/2 years ago during calving. One of the cows decided to calve in the woods above the watershed, which is 60 acres, generally holds 155 million gallons of water. Went to check on the calf that was only a few hours old and that baby jumped up, took off and tumbled all the way down the woods into the water. To my amazement she started swimming (looked like dog paddling) towards the middle of the lake. Yelled at my husband to go in & get her but he looked at me like I was nuts - it was 40 degrees - and went to get the boat at the workshop. I watched her swim to the middle then head north but it was clear she was starting to struggle so I dropped trou & went in. Yowza that water was cold!! By the time I got to her she was so tired she didn't struggle and I got her back to shore and carried her up the ravine, wrapped myself around her trying to get her warm. I was barefoot but my feet were so frozen I didn't realize they were completely cut up. Meanwhile, Hubby gets back with the boat & doesn't see me or the calf but saw my clothes on the bank. Minor heart failure ensued. He's halfway down the lake searching when I hear the boat & started yelling; he finally spotted me through the woods. Docks the boat, gives me his coat & carries the calf the rest of the way up the hill to her mama - who evidently had no clue what had just happened.
Still have that ornery calf, who is now the boss cow and one of my best producers.