Hello there!
Do you know what glue is? It's like a sticky substance that you can use to stick things together, like paper, or even toys!
Animal glue is a kind of glue that comes from animals, like cows, pigs, and rabbits. They use a special part of the animal called collagen, which is like a stringy thing that holds the animal's skin and bones together.
To make animal glue, people take the skin, bones, and other parts of the animal and boil them in water. This causes the collagen to break down and turn into a thick, sticky substance. Then, they strain out any bits and pieces left in the liquid and let it cool.
Once it has cooled down, it turns into a hard block. To use the glue, you have to heat it up again with water until it becomes liquid.
Animal glue is very strong and was used a lot in the past to make things like furniture, musical instruments, and artwork. Nowadays, we have other kinds of glue that are easier to use and less smelly, but some people still prefer using animal glue because it's more natural and traditional.
I hope that helps you understand animal glue a little better!