diff --git a/src/main/java/cat/udl/eps/softarch/demo/domain/Location.java b/src/main/java/cat/udl/eps/softarch/demo/domain/Location.java
new file mode 100644
index 00000000..c4773b14
--- /dev/null
+++ b/src/main/java/cat/udl/eps/softarch/demo/domain/Location.java
@@ -0,0 +1,30 @@
+package cat.udl.eps.softarch.demo.domain;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Entity
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+
+public class Location extends UriEntity<Long>{
+    @Id
+    private Long id;
+
+    private String address;
+
+    private float latitude;
+
+    private float longitude;
+
+    private String province;
+
+    private String municipality;
+
+    private String postalCode;
+
+}
diff --git a/src/main/java/cat/udl/eps/softarch/demo/domain/Pet.java b/src/main/java/cat/udl/eps/softarch/demo/domain/Pet.java
new file mode 100644
index 00000000..947c3887
--- /dev/null
+++ b/src/main/java/cat/udl/eps/softarch/demo/domain/Pet.java
@@ -0,0 +1,21 @@
+package cat.udl.eps.softarch.demo.domain;
+
+import jakarta.persistence.Id;
+
+public class Pet extends UriEntity<Long> {
+    @Id
+    Long id;
+    String name;
+    boolean isAdopted;
+    String color;
+    String size;
+    Double weight;
+    String age;
+    String description;
+    String breed;
+
+    @Override
+    public Long getId() {
+        return id;
+    }
+}
diff --git a/src/main/java/cat/udl/eps/softarch/demo/domain/Schedule.java b/src/main/java/cat/udl/eps/softarch/demo/domain/Schedule.java
new file mode 100644
index 00000000..bd3537d3
--- /dev/null
+++ b/src/main/java/cat/udl/eps/softarch/demo/domain/Schedule.java
@@ -0,0 +1,24 @@
+package cat.udl.eps.softarch.demo.domain;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import jakarta.validation.constraints.NotNull;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+
+import java.util.Date;
+
+@Entity
+@Data
+@EqualsAndHashCode(callSuper = true)
+public class Schedule extends UriEntity<Long> {
+
+    @Id
+    private Long id;
+
+    @NotNull
+    private Date start;
+
+    @NotNull
+    private Date finish;
+}
diff --git a/src/main/java/cat/udl/eps/softarch/demo/domain/Shelter.java b/src/main/java/cat/udl/eps/softarch/demo/domain/Shelter.java
new file mode 100644
index 00000000..9fd2b1fa
--- /dev/null
+++ b/src/main/java/cat/udl/eps/softarch/demo/domain/Shelter.java
@@ -0,0 +1,47 @@
+package cat.udl.eps.softarch.demo.domain;
+
+import jakarta.persistence.*;
+import jakarta.validation.constraints.Email;
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.NotNull;
+import jakarta.validation.constraints.PastOrPresent;
+
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+
+import java.time.ZonedDateTime;
+
+@Entity
+@Table(name = "Shelter")
+@Data
+@EqualsAndHashCode(callSuper = true)
+public class Shelter extends UriEntity<Long> {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @NotBlank
+    private String name;
+
+    @NotBlank
+    @Email
+    @Column(unique = true)
+    private String email;
+
+    @NotBlank
+    @Column(unique = true)
+    private String mobile;
+
+    @PastOrPresent
+    @NotNull
+    private ZonedDateTime createdAt;
+
+    @PastOrPresent
+    private ZonedDateTime updatedAt;
+
+    @NotNull
+    private boolean isActive;
+
+    private Integer rating;
+}
\ No newline at end of file
diff --git a/src/main/java/cat/udl/eps/softarch/demo/domain/ShelterCertificate.java b/src/main/java/cat/udl/eps/softarch/demo/domain/ShelterCertificate.java
new file mode 100644
index 00000000..f95d17af
--- /dev/null
+++ b/src/main/java/cat/udl/eps/softarch/demo/domain/ShelterCertificate.java
@@ -0,0 +1,14 @@
+package cat.udl.eps.softarch.demo.domain;
+
+import java.util.Date;
+
+public class ShelterCertificate extends UriEntity<Long> {
+    
+    private Long id;
+    private Date expirationDate;
+
+    @Override
+    public Long getId() {
+        return id;
+    }
+}
diff --git a/src/main/java/cat/udl/eps/softarch/demo/domain/ShelterVolunteer.java b/src/main/java/cat/udl/eps/softarch/demo/domain/ShelterVolunteer.java
new file mode 100644
index 00000000..fbbd4f7c
--- /dev/null
+++ b/src/main/java/cat/udl/eps/softarch/demo/domain/ShelterVolunteer.java
@@ -0,0 +1,5 @@
+package cat.udl.eps.softarch.demo.domain;
+
+public class ShelterVolunteer extends User {
+
+}