Bottom wooden window frame collapsed – advice needed

Hi everyone,

I’m looking for some advice on a problem with a window / glass door in my house.
The bottom wooden support/frame has collapsed, and as you can see in the pictures, the glass is currently being held together very poorly with plastic and tape just to keep rain and wind out.

This is on the ground floor, and I’m especially worried because I have a large dog and I’m afraid he could potentially push through it or get injured, or even escape through this opening.

I’d love suggestions on:

• Would it be reasonable to rebuild the lower section using strong, durable wood instead of glass?
• Could this space be adapted into a dog entry door without compromising safety or insulation?
• What materials or designs would you recommend to make it secure and dog-proof?

Any suggestions, safety tips, or similar experiences would be really appreciated.
Thanks in advance!

https://preview.redd.it/ywsjc4jenqjg1.jpg?width=1536&format=pjpg&auto=webp&s=a7b63031a919672827a411da9854c0577fb567b9

https://preview.redd.it/3os874jenqjg1.jpg?width=1536&format=pjpg&auto=webp&s=032808ec8cc9f9672137300046ea158d5419aa9a

https://preview.redd.it/0f9a34jenqjg1.jpg?width=2048&format=pjpg&auto=webp&s=6865e6a2690649007fbcb058978714314a611f3d

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