diff --git a/app/models/adoption_status.py b/app/models/adoption_status.py
new file mode 100644
index 0000000..db47873
--- /dev/null
+++ b/app/models/adoption_status.py
@@ -0,0 +1,5 @@
+from app.extensions import db
+
+class AdoptionStatus(db.Model):
+  id = db.Column(db.Integer, primary_key=True)
+  status = db.Column(db.String(255), nullable=False)
\ No newline at end of file
diff --git a/app/models/adoptions.py b/app/models/adoptions.py
new file mode 100644
index 0000000..a0e8f92
--- /dev/null
+++ b/app/models/adoptions.py
@@ -0,0 +1,13 @@
+from app.extensions import db
+import datetime
+from sqlalchemy.orm import relationship, mapped_column
+
+class Adoptions(db.Model) :
+  id = mapped_column(db.Integer, primary_key=True)
+  publisher_id = mapped_column(db.Integer, db.ForeignKey('user.id'), nullable=False)
+  pet_id = mapped_column(db.Integer, db.ForeignKey('pet.id'), nullable=False)
+  publish_date = mapped_column(db.DateTime, default=datetime.datetime.utcnow, nullable=False)
+  status_id = mapped_column(db.Integer, db.ForeignKey('adoption_status.id'), nullable=False)
+  publisher = relationship("User")
+  pet = relationship("Pet")
+  status = relationship("AdoptionStatus")
\ No newline at end of file
diff --git a/app/models/pet.py b/app/models/pet.py
new file mode 100644
index 0000000..b4df0df
--- /dev/null
+++ b/app/models/pet.py
@@ -0,0 +1,15 @@
+import datetime
+from sqlalchemy.orm import relationship, mapped_column
+from app.extensions import db
+
+class Pet(db.Model):
+  id = mapped_column(db.Integer, primary_key=True)
+  name = mapped_column(db.String(255), nullable=False)
+  kind_id = mapped_column(db.Integer, db.ForeignKey('pet_kind.id'), nullable=False)
+  age = mapped_column(db.Integer, default=0, nullable=False)
+  weight = mapped_column(db.Float, default=0, nullable=False)
+  location = mapped_column(db.String(255), nullable=False)
+  sex = mapped_column(db.String(1), nullable=False)
+  height = mapped_column(db.Float, default=0, nullable=False)
+  registration_date = mapped_column(db.DateTime, default=datetime.datetime.utcnow, nullable=False)
+  kind = relationship("PetKind")
\ No newline at end of file
diff --git a/app/models/pet_kind.py b/app/models/pet_kind.py
new file mode 100644
index 0000000..9aa5671
--- /dev/null
+++ b/app/models/pet_kind.py
@@ -0,0 +1,5 @@
+from app.extensions import db
+
+class PetKind(db.Model):
+  id = db.Column(db.Integer, primary_key=True)
+  name = db.Column(db.String(255), nullable=False)
\ No newline at end of file
diff --git a/app/models/user.py b/app/models/user.py
new file mode 100644
index 0000000..f78da58
--- /dev/null
+++ b/app/models/user.py
@@ -0,0 +1,15 @@
+import datetime
+from sqlalchemy.orm import mapped_column
+from app.extensions import db
+
+class User(db.Model):
+  id = mapped_column(db.Integer, primary_key=True)
+  username = mapped_column(db.String(255), nullable=False)
+  email = mapped_column(db.String(255), nullable=False)
+  password = mapped_column(db.Text, nullable=False)
+  name = mapped_column(db.String(255), nullable=False)
+  lastname = mapped_column(db.String(255), nullable=False)
+  birth_date = mapped_column(db.Date, nullable=False)
+  address = mapped_column(db.String(255), nullable=False)
+  phone_number = mapped_column(db.String(255), nullable=False)
+  registration_date = mapped_column(db.DateTime, default=datetime.datetime.utcnow, nullable=False)
\ No newline at end of file