A flooring intended to be placed on the ground of an enclosure for breeding animals, advantageously a circulation corridor (C) running alongside at least one accommodation area (A) for said animals, said flooring having two opposite surfaces: - a lower surface , intended to rest on the ground, and - an opposite, upper surface , intended to serve as a resting surface for the animals, said upper surface of the flooring including a central strip bordered by at least one side strip , said at least one side strip being delimited by two longitudinal borders: - an inner border running alongside said central strip , and - an outer border , remote from said central strip , forming a lateral border of said upper surface , said at least one side strip having a slope that descends towards said central strip , from said outer border to said inner border , said flooring comprising: - an upper layer , forming the upper surface of said flooring , advantageously made of an elastic material, characterized in that said flooring also comprises: - at least one underlying stringer , intended to be placed between the ground (S) and said upper layer , to form said at least one side strip , said at least one stringer including two opposite faces: - a lower face , intended to rest on the ground (S), and - an opposite, upper face , intended to serve as a resting surface for said upper layer , said opposite faces converging from an outer end to an inner end , and in that the width of said at least one side strip , defined horizontally between said longitudinal borders is higher than 100 mm. said flooring having two opposite surfaces: - a lower surface , intended to rest on the ground, and - an opposite, upper surface , intended to serve as a resting surface for the animals, - a lower surface , intended to rest on the ground, and - an opposite, upper surface , intended to serve as a resting surface for the animals, said upper surface of the flooring including a central strip bordered by at least one side strip , said at least one side strip being delimited by two longitudinal borders: - an inner border running alongside said central strip , and - an outer border , remote from said central strip , forming a lateral border of said upper surface , - an inner border running alongside said central strip , and - an outer border , remote from said central strip , forming a lateral border of said upper surface , said at least one side strip having a slope that descends towards said central strip , from said outer border to said inner border , said flooring comprising: - an upper layer , forming the upper surface of said flooring , advantageously made of an elastic material, - an upper layer , forming the upper surface of said flooring , advantageously made of an elastic material, characterized in that said flooring also comprises: - at least one underlying stringer , intended to be placed between the ground (S) and said upper layer , to form said at least one side strip , - at least one underlying stringer , intended to be placed between the ground (S) and said upper layer , to form said at least one side strip , said at least one stringer including two opposite faces: - a lower face , intended to rest on the ground (S), and - an opposite, upper face , intended to serve as a resting surface for said upper layer , - a lower face , intended to rest on the ground (S), and - an opposite, upper face , intended to serve as a resting surface for said upper layer , said opposite faces converging from an outer end to an inner end , and in that the width of said at least one side strip , defined horizontally between said longitudinal borders is higher than 100 mm. <EOS>