Device for the collection of animal semen, comprising: - an inlet element comprising a mechanical interface for connection to an artificial vagina and delimiting an inlet opening in the collection device; - a filter associated with the inlet element and delimiting with the inlet element an inlet chamber extending on the side of a first face (17, 19) of the filter turned towards the inlet opening; and - a collection bag extending between a closed distal end zone and a proximal end zone having an opening in which said inlet element is engaged; with said bag which is fixed to said inlet element; and with said bag and said filter which delimit a collection chamber extending on the side of the second face of the filter turned towards the closed distal end zone of the bag; by means of which the semen entering the device via the inlet opening passes through the filter and is collected in the collection chamber; characterized in that the filter is formed by a perforated wall having a tubular portion extending axially between a first end turned towards said proximal end zone of said bag and a second end turned towards said closed distal end zone of said bag and a bottom portion extending transversally to said tubular portion and closing the latter at its second end; said perforated wall is perforated by a plurality of orifices distributed over said perforated wall being arranged on said tubular portion according to a first predetermined pattern and on said bottom portion according to a second predetermined pattern, said first predetermined pattern and second predetermined pattern providing a surface density of orifices that is greater on said bottom portion than on said tubular portion. - an inlet element comprising a mechanical interface for connection to an artificial vagina and delimiting an inlet opening in the collection device; - a filter associated with the inlet element and delimiting with the inlet element an inlet chamber extending on the side of a first face (17, 19) of the filter turned towards the inlet opening; and - a collection bag extending between a closed distal end zone and a proximal end zone having an opening in which said inlet element is engaged; with said bag which is fixed to said inlet element; and with said bag and said filter which delimit a collection chamber extending on the side of the second face of the filter turned towards the closed distal end zone of the bag; by means of which the semen entering the device via the inlet opening passes through the filter and is collected in the collection chamber; characterized in that the filter is formed by a perforated wall having a tubular portion extending axially between a first end turned towards said proximal end zone of said bag and a second end turned towards said closed distal end zone of said bag and a bottom portion extending transversally to said tubular portion and closing the latter at its second end; said perforated wall is perforated by a plurality of orifices distributed over said perforated wall being arranged on said tubular portion according to a first predetermined pattern and on said bottom portion according to a second predetermined pattern, said first predetermined pattern and second predetermined pattern providing a surface density of orifices that is greater on said bottom portion than on said tubular portion.