This video contains Hindi meaning of Pitch. .. #LOGICAL #STUDENT #HINDI #MEANING #Pitch
The hedgehog's back contains two large muscles that control the position of the quills. The average hedgehog has about 5,000 to 6,500 quills that are strong on the outer surface but filled with air pockets on the inside. When the creature is rolled into a ball, the quills on the back protect the tucked head, feet, and belly, which are not quilled.
Neither hedgehogs nor porcupines can shoot their pricks. The quills of a porcupine are barbed and may dislodge when stuck in a would-be predator, but this is completely passive, and they are not shot out. Hedgehogs don't have quills like a porcupine. Instead, their spines are just very thick hair much like our fingernails.