diff --git a/pyproject.toml b/pyproject.toml
index 3de6f57..6b3db5a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -30,7 +30,8 @@ dependencies = [
     "sphinx-rtd-theme",
     "gunicorn",
     "fontawesomefree",
-    "whitenoise"
+    "whitenoise",
+    "model_bakery"
 ]
 dynamic = ["version", "readme"]
 
diff --git a/src/fellchensammlung/admin.py b/src/fellchensammlung/admin.py
index 8c38f3f..0ab3679 100644
--- a/src/fellchensammlung/admin.py
+++ b/src/fellchensammlung/admin.py
@@ -1,3 +1,11 @@
 from django.contrib import admin
 
-# Register your models here.
+from django.contrib import admin
+
+from .models import Animal, Species, RescueOrganization, AdoptionNotice, Location
+
+admin.site.register(Animal)
+admin.site.register(Species)
+admin.site.register(RescueOrganization)
+admin.site.register(Location)
+admin.site.register(AdoptionNotice)
\ No newline at end of file
diff --git a/src/fellchensammlung/migrations/0001_initial.py b/src/fellchensammlung/migrations/0001_initial.py
new file mode 100644
index 0000000..06e4a03
--- /dev/null
+++ b/src/fellchensammlung/migrations/0001_initial.py
@@ -0,0 +1,73 @@
+# Generated by Django 5.0.3 on 2024-03-17 22:05
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Location',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=200)),
+                ('postcode', models.CharField(max_length=200)),
+                ('country', models.CharField(choices=[('DE', 'Germany'), ('AT', 'Austria'), ('CH', 'Switzerland')], max_length=20)),
+                ('description', models.TextField(blank=True, null=True, verbose_name='Description')),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Species',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(help_text='Enter a animal species', max_length=200, verbose_name='Name')),
+            ],
+            options={
+                'verbose_name': 'Species',
+                'verbose_name_plural': 'Species',
+            },
+        ),
+        migrations.CreateModel(
+            name='RescueOrganization',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=200)),
+                ('trusted', models.BooleanField(default=False, verbose_name='Trusted')),
+                ('instagram', models.URLField(blank=True, null=True, verbose_name='Instagram profile')),
+                ('facebook', models.URLField(blank=True, null=True, verbose_name='Facebook profile')),
+                ('fediverse_profile', models.URLField(blank=True, null=True, verbose_name='Fediverse profile')),
+                ('website', models.URLField(blank=True, null=True, verbose_name='Website')),
+                ('location', models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, to='fellchensammlung.location')),
+            ],
+        ),
+        migrations.CreateModel(
+            name='AdoptionNotice',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('created_at', models.DateField(verbose_name='Created at')),
+                ('searching_since', models.DateField(verbose_name='Searching for a home since')),
+                ('name', models.CharField(max_length=200)),
+                ('description', models.TextField(blank=True, null=True, verbose_name='Description')),
+                ('further_information', models.URLField(blank=True, null=True, verbose_name='Link to further information')),
+                ('group_only', models.BooleanField(default=False, verbose_name='Only group adoption')),
+                ('organization', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, to='fellchensammlung.rescueorganization', verbose_name='Organization')),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Animal',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('date_of_birth', models.DateField(blank=True, null=True, verbose_name='Date of birth')),
+                ('name', models.CharField(max_length=200)),
+                ('description', models.TextField(blank=True, null=True, verbose_name='Description')),
+                ('adoption_notice', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='fellchensammlung.adoptionnotice')),
+                ('species', models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, to='fellchensammlung.species')),
+            ],
+        ),
+    ]
diff --git a/src/fellchensammlung/models.py b/src/fellchensammlung/models.py
index 71a8362..f53c376 100644
--- a/src/fellchensammlung/models.py
+++ b/src/fellchensammlung/models.py
@@ -1,3 +1,74 @@
 from django.db import models
+from django.utils.translation import gettext_lazy as _
+
+
+class Species(models.Model):
+    """Model representing a species of animal."""
+    name = models.CharField(max_length=200, help_text=_('Enter a animal species'),
+                            verbose_name=_('Name'))
+
+    def __str__(self):
+        """String for representing the Model object."""
+        return self.name
+
+    class Meta:
+        verbose_name = _('Species')
+        verbose_name_plural = _('Species')
+
+
+class Location(models.Model):
+    def __str__(self):
+        return f"{self.name}"
+
+    GERMANY = "DE"
+    AUSTRIA = "AT"
+    SWITZERLAND = "CH"
+    COUNTRIES_CHOICES = {
+        GERMANY: "Germany",
+        AUSTRIA: "Austria",
+        SWITZERLAND: "Switzerland"
+    }
+
+    name = models.CharField(max_length=200)
+    postcode = models.CharField(max_length=200)
+    country = models.CharField(max_length=20, choices=COUNTRIES_CHOICES)
+    description = models.TextField(null=True, blank=True, verbose_name=_('Description'))
+
+
+class RescueOrganization(models.Model):
+    def __str__(self):
+        return f"{self.name}"
+
+    name = models.CharField(max_length=200)
+    trusted = models.BooleanField(default=False, verbose_name=_('Trusted'))
+    location = models.ForeignKey(Location, on_delete=models.PROTECT)
+    instagram = models.URLField(null=True, blank=True, verbose_name=_('Instagram profile'))
+    facebook = models.URLField(null=True, blank=True, verbose_name=_('Facebook profile'))
+    fediverse_profile = models.URLField(null=True, blank=True, verbose_name=_('Fediverse profile'))
+    website = models.URLField(null=True, blank=True, verbose_name=_('Website'))
+
+
+
+class Animal(models.Model):
+    def __str__(self):
+        return f"{self.name}"
+
+    date_of_birth = models.DateField(null=True, blank=True, verbose_name=_('Date of birth'))
+    name = models.CharField(max_length=200)
+    description = models.TextField(null=True, blank=True, verbose_name=_('Description'))
+    species = models.ForeignKey(Species, on_delete=models.PROTECT)
+
+class AdoptionNotice(models.Model):
+    def __str__(self):
+        return f"{self.name}"
+
+    created_at = models.DateField(verbose_name=_('Created at'))
+    searching_since = models.DateField(verbose_name=_('Searching for a home since'))
+    name = models.CharField(max_length=200)
+    description = models.TextField(null=True, blank=True, verbose_name=_('Description'))
+    organization = models.ForeignKey(RescueOrganization, blank=True, null=True, on_delete=models.SET_NULL,
+                                     verbose_name=_('Organization'))
+    further_information = models.URLField(null=True, blank=True, verbose_name=_('Link to further information'))
+    group_only = models.BooleanField(default=False, verbose_name=_('Only group adoption'))
+    animals = models.ManyToManyField(Animal)
 
-# Create your models here.
diff --git a/src/fellchensammlung/urls.py b/src/fellchensammlung/urls.py
index a9d7f56..9b9930f 100644
--- a/src/fellchensammlung/urls.py
+++ b/src/fellchensammlung/urls.py
@@ -4,4 +4,8 @@ from . import views
 
 urlpatterns = [
     path("", views.index, name="index"),
+    # ex: /animal/5/
+    path("<int:animal_id>/", views.animal_detail, name="animal-detail"),
+    # ex: /adoption_notice/7/
+    path("<int:adoption_notice_id>/", views.adoption_notice_detail, name="adoption-notice-detail"),
 ]
\ No newline at end of file
diff --git a/src/fellchensammlung/views.py b/src/fellchensammlung/views.py
index f9c11b4..d178ea2 100644
--- a/src/fellchensammlung/views.py
+++ b/src/fellchensammlung/views.py
@@ -5,3 +5,12 @@ from django.http import HttpResponse
 
 def index(request):
     return HttpResponse("Hello, world. Look at all the little guys&girls and non-binary pals!")
+
+
+def adoption_notice_detail(request, adoption_notice_id):
+    return HttpResponse("You're looking at adoption notice %s." % adoption_notice_id)
+
+
+def animal_detail(request, animal_id):
+    response = "You're looking at animal %s."
+    return HttpResponse(response % animal_id)
diff --git a/src/notfellchen/main.py b/src/notfellchen/main.py
index 08bc2dd..bf19fef 100644
--- a/src/notfellchen/main.py
+++ b/src/notfellchen/main.py
@@ -18,6 +18,10 @@ def main():
             "forget to activate a virtual environment?"
         ) from exc
 
+    if sys.argv[1] == "populate":
+        from fellchensammlung.populate_with_testdata import populate_with_testdata
+        populate_with_testdata()
+
     execute_from_command_line(sys.argv)