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.
Hedgehog. Hedgehogs are the only British mammal with spines. When threatened they will roll into a tight ball, with the spines providing sharp protection from predators. Young hedgehogs are born with soft spines under the skin to protect mum, with a second set of spines emerging within days.