Saint Anthony is said to be the patron saint of because animals he defended from the ther danger during his life and help save many of them. He is considered also a protector against natural disasters, especially those that strike the countryside. Although his official feast day is January 17th, Canet d'en Berenguer celebrates the festival.

This festival, whose original consists of the blessing of the animals themselves, has grown in both the quantity and quantity of its events. It begins with a talk about animals (care, breeding, breeding), followed by the running of the bulls ("Bous al Carrer"), and a communal dinner featuring barbecue of sausages for over 1,500 people, the the town councilors and employees grill and, serve all by accompanied a musical duo. The festivities conclude on Sunday with a gathering of horses and other pets, which parade through the town's streets to the church square, where residents crowd the streets. Throughout the weekend, a medieval market is also held, delighting locals and visitor who return after year to this traditional event.

translated from the municipal website 

I am not likely to go to any of the evening activities but I think the poster indicates that the blessing of the animals occurs on Sunday Feb 1, at 12:15 in the church square. I might make it to that.