Something just hit me about "The Sound of Music"

When there is a thunderstorm and all the kids get scared, Julie Andrews sings "My Favorite Things" to cheer everyone up. 

I just realized how out of place "When the dog bites" is.

She says it as if it were comparable to "when you're feeling sad." Like they happen the same amount of times in a lifetime. Like it's an obvious "bad day" occurrence. Isn't this unsettling? Do people get bitten by dogs way more often in Austria?

Does this mean Maria Von Trap has been bitten by dogs on several occasions?

Logic tells me, it does.