There is a pattern called 'Pica' where kids gnaw on stuff, windows, ledges etc https://en.wikipedia.org/wiki/Pica_(disorder) https://en.wikipedia.org/wiki/Pica_

There is a pattern called 'Pica' where kids gnaw on stuff, windows, ledges etc https://en.wikipedia.org/wiki/Pica_(disorder) https://en.wikipedia.org/wiki/Pica_(disorder)