diff --git a/domain/src/main/java/es/uvigo/esei/xcs/domain/entities/Owner.java b/domain/src/main/java/es/uvigo/esei/xcs/domain/entities/Owner.java
index decf5df4d3fbc37cdbcab3d1913f7c2804d73fe7..ca9317318cab177e99a49b5b943a2d633df3b1c6 100644
--- a/domain/src/main/java/es/uvigo/esei/xcs/domain/entities/Owner.java
+++ b/domain/src/main/java/es/uvigo/esei/xcs/domain/entities/Owner.java
@@ -79,9 +79,8 @@ public class Owner extends User implements Serializable {
 	}
 	
 	/**
-	 * Returns the pets that belongs to this owner. The collection returned is
+	 * Returns the pets that belong to this owner. The collection returned is
 	 * unmodifiable and no order are guaranteed.
-	 * If the pet already belongs to this owner, no action will be done.
 	 * 
 	 * @return the pets that belongs to this owner. 
 	 */
@@ -138,6 +137,8 @@ public class Owner extends User implements Serializable {
 	/**
 	 * Adds a pet directly to the pets collection of this owner if the pet does
 	 * not already belongs to this owner. The pet's owner will not be updated.
+	 * If the pet already belongs to this owner, no action will be done.
+	 * 
 	 * 
 	 * @param pet the pet to add to this owner. {@code null} values not
 	 * supported.
diff --git a/domain/src/main/java/es/uvigo/esei/xcs/domain/entities/Pet.java b/domain/src/main/java/es/uvigo/esei/xcs/domain/entities/Pet.java
index 0fe3e20c64f9aa3f25fa10a8a4edce5e6091c4fc..d2338b27c6d2d3eb27c0c98e25be078957ba1933 100644
--- a/domain/src/main/java/es/uvigo/esei/xcs/domain/entities/Pet.java
+++ b/domain/src/main/java/es/uvigo/esei/xcs/domain/entities/Pet.java
@@ -103,6 +103,11 @@ public class Pet implements Serializable {
 		this.setOwner(owner);
 	}
 	
+	/**
+	 * Returns the identifier of this pet.
+	 * 
+	 * @return the identifier of this pet. 
+	 */
 	public int getId() {
 		return id;
 	}
@@ -195,7 +200,7 @@ public class Pet implements Serializable {
 	}
 
 	/**
-	 * Sets the owner of this pet. The new owner can be {@code null}, meaining
+	 * Sets the owner of this pet. The new owner can be {@code null}, meaning
 	 * that the pet has no owner.
 	 * 
 	 * @param owner the new owner of the pet. {@code null} value is valid,
diff --git a/rest/src/main/java/es/uvigo/esei/xcs/rest/OwnerResource.java b/rest/src/main/java/es/uvigo/esei/xcs/rest/OwnerResource.java
index 6d92173c78d7c3983d70f81547270ce477541362..8d15c3159c08b253879203086482bbf62efb6c08 100644
--- a/rest/src/main/java/es/uvigo/esei/xcs/rest/OwnerResource.java
+++ b/rest/src/main/java/es/uvigo/esei/xcs/rest/OwnerResource.java
@@ -119,6 +119,7 @@ public class OwnerResource {
 	 * Deletes an owner.
 	 * 
 	 * @param login the login of the owner to be deleted.
+	 * @return an empty {@code OK} response.
 	 * @throws IllegalArgumentException if {@code login} is {@code null} or if
 	 * it does not identifies a valid owner.
 	 */
diff --git a/rest/src/main/java/es/uvigo/esei/xcs/rest/PetResource.java b/rest/src/main/java/es/uvigo/esei/xcs/rest/PetResource.java
index 55ac0f1877aca55fe444a4dbd5ac5a1e7ad376c4..9194ef226126ba391a8f18865b118da7c5671d50 100644
--- a/rest/src/main/java/es/uvigo/esei/xcs/rest/PetResource.java
+++ b/rest/src/main/java/es/uvigo/esei/xcs/rest/PetResource.java
@@ -129,6 +129,7 @@ public class PetResource {
 	 * Deletes a pet.
 	 * 
 	 * @param id the identifier of the pet to be deleted.
+	 * @return an empty {@code OK} response.
 	 * @throws IllegalArgumentException if there is no pet with the provided
 	 * identifier.
 	 * @throws SecurityException if the pet's owner is not the current user.