1. Many a good cow hath a bad calf. 

2. Like cow, like calf.

3. If you agree to carry the calf, they'll make you carry the cow. 

4. When the calf is stolen, the farmer mends the stall. 

5. The calf blared for its mother.

6. Hillsden was complain-ing of cramp in his calf muscles.

7. The goat bunted the calf.

8. A dairy cow needs to produce a calf each year.

9. The cow slinked its calf.

10. The calf lapped up the bucket of milk.

11. The calf lilled out its tongue.

12. She tore a calf muscle playing squash.

13. The cow has produced a calf.

14. He suffered a pulled calf muscle.

15. Their prize cow is in calf .

16. The cow cast a calf.

17. He expects to have recovered from his calf injury in time.

18. A calf was offered up as a sacrifice to the goddess.

19. He was feeling twinges from a calf injury after 20 minutes of the game.

20. Soon after it was born(sentencedict.com/calf.html), the calf got up and tried to stand on its shaky legs.

21. I've torn a calf muscle.

22. I had a cramp in my right calf.

23. Right: A handsome array in calf, morocco and vellum.

24. All that's missing is the ritual sacrifice-the fatted calf.

25. He's got a calf injury.

26. When captured she had a calf at foot.

27. Little veal and calf are graded for retail trade.

28. Hereford crossbred heifers with calf at heel ￡1,400.

29. A masseuse started to attack Joujou's right calf.

30. She's been unable to play since January because of a torn calf muscle.