Dogs need to go too…

We have a beautiful park about a 30 minute walk from our house, Parque de Paloma.  On one of our walks there I noticed a sign.  Something on the sign made me laugh.

Photo of a sign in our local park
Notice anything strange?

 

Have you figured it out yet?  Or is it just my strange sense of humour?

Photo of a sign in our local park
Dogs need to go too

 

Well, I suppose dogs need to go too.

On our walk out of the park, we found the place the sign was pointing to:

Photo of a sign in our local park
Pipi-can

 

Is this just a Spanish thing?  Or does it happen elsewhere?  This is the only place I’ve seen it.