PC fox: takes time and effort but eventually results in mass infinite fox growth as you go from one fox to another
Mobile fox: even just walking into Bwom results in the entire fox population instantly outgrowing everything without any warning
You in particular have that effect on foxes. I'm working on identifying the issue, and I think I've found it: You're too damn cute and they just can't resist.
Also there's text in the input that should be strictly numerical, meaning that I'm trying to stuff a word into a place a number goes, meaning that it's literally telling me outright "That's not a number", which is the same failstate as "the word 'infinity' isn't a number either". But you being too cute is probably the issue.