Posted at 2013-10-21 09:36:32 — Link
Take a look at this screenshot:
The bonus hides the other effects, such as Childhood and Adoption. (On Google Chrome, at least.) Which is bit inconvenient, since there's no easy way to tell when this pet is going to grow up etc.
(I noticed the same during the previous event, but thought that surely someone's reported this before. Couldn't find it among the old reports, but sorry if this is a double..)