Shelter basement full of zombie dogs! (April Fool’s Day joke)

[Wuzzy2]

I peeked down into the basement of some new evac shelter (my character was a bit advanced) and found this:
http://i.imgur.com/yw8n2Fl.png

Yes, it’s a basement full of zombie dogs. Is this normal?
Needless to say, the character did not survive long, but luckily, I remembered to take a screenshot before it all happened.

This bug seems extremely rare, as it never occoured to me before. Can anyone reproduce this?

Seen on 0.A on GNU/Linux. I used the ncurses build.

[KA101]

All-dogs is nontrivial, but starting basements full of zeds is Working As Intended. It's a 1/10 chance, and should be offset by significantly increased gear down there.

[Wuzzy2]

The commit 34adef53356APRILFOOLSDAY fixes this issue. :P
Closing now.