21. Since dogs are quadrupeds , he ties shoes to his hands and feet. 22. Each year, it carries 3, 000 quadrupeds to different shows and competitions. 23. Pavuleans are metre and a half-long hooved quadrupeds with large round heads. 24. Several genii are shown carrying a small quadruped . 25. For quadrupeds , increasing running speed means increasing the demand for oxygen and fuel. 26. This particular quadruped is not named Traveler. 27. One proposed explanation is that the animals were brought to Europe by way of quadrupeds . 28. Although the forelimbs are much smaller than the hind limbs, all aetosaurs were quadrupeds . 29. Palisot invented a new method of classification for insects, and proposed another for quadrupeds . 30. He also gives a visual description of the numerous living quadrupeds roaming around the land.