I loaded your STL in onshape and it appears it was drawn for a bowl with an opening of 175mm. Meaning a bowl that is 175mm where the bowl transitions to the flange (the flange is larger than 175mm) would fit in this stand if it were printed as is. Most slicers, including Bambu Studio have a scale option; my cat bowls are 125mm which is 71.4% of 175 so I scaled it to 71.4 in Bambu Studio and it printed perfectly.
Thanks again!
I thought about it again, be careful for the following points :
-If you put water in a 3D printed bowl it will start to leak a bit in 3-5 days (depending of the wall thinckness, must be tested more)
-Since it's 3D printed bowl, depending of the material you printed it, it can release micro plastic particles that would go in the pet water/food.
Again these points has to be tested to be fully validated but I wanted to inform you.
Enjoy!