f u get mad because u can't put it on minecraft i will teach u what to do.

1st step:dowload the mob skin pack.

2sn step:open minecraft not the launcher of minecraft .

3rd step: open dowload page in docs.

4th step: open "options" in minecraft.

5th step: open texture packs.

6th step: go to downloads and drag the mob skin to the texture pack option then minecraft will ask if u want to add the skin and u click yes.

and now the skin is on ur library.

Well i hope that help u.