diff --git a/CourseApp.Tests/AnimalsTest.cs b/CourseApp.Tests/AnimalsTest.cs
index e871ddc..215cbe3 100644
--- a/CourseApp.Tests/AnimalsTest.cs
+++ b/CourseApp.Tests/AnimalsTest.cs
@@ -56,5 +56,18 @@ public void ToStringTesting()
             Assert.Equal("Собака по имени White. Её возраст - 5, пол - женский", animals[0].ToString());
             Assert.Equal("Кот по имени Black. Его возраст - 2, пол - мужской", animals[1].ToString());
         }
+
+        [Fact]
+        public void ToCompareTest()
+        {
+            Animals[] animals = new Animals[3];
+            animals[0] = new Dog("White", 5, "female");
+            animals[1] = new Cat("Black", 2, "male");
+            animals[2] = new Dog("Black");
+            if (animals[0].CompareTo(animals[1]) == 1 && animals[1].CompareTo(animals[2]) == 0)
+            {
+                Assert.True(true);
+            }
+        }
     }
 }
\ No newline at end of file
diff --git a/CourseApp.Tests/CourseApp.Tests.csproj b/CourseApp.Tests/CourseApp.Tests.csproj
index 21e7368..5815955 100644
--- a/CourseApp.Tests/CourseApp.Tests.csproj
+++ b/CourseApp.Tests/CourseApp.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.0</TargetFramework>
+    <TargetFramework>netcoreapp 3.1</TargetFramework>
     <TreatWarningsAsErrors>True</TreatWarningsAsErrors>
     <NoWarn>1573,1591,1701;1702;1705</NoWarn>
     <IsPackable>false</IsPackable>
@@ -27,4 +27,4 @@
     <AdditionalFiles Include="../_stylecop/stylecop.json" />
   </ItemGroup>
 
-</Project>
\ No newline at end of file
+</Project>
diff --git a/CourseApp/Animals.cs b/CourseApp/Animals.cs
index 98ee636..c73ecd8 100644
--- a/CourseApp/Animals.cs
+++ b/CourseApp/Animals.cs
@@ -3,6 +3,7 @@
 
 namespace CourseApp
 {
+    public abstract class Animals : IComparable, IMovable
     public abstract class Animals
     {
         private string sex;
@@ -58,5 +59,30 @@ public virtual void AgeUp()
         {
             this.Age++;
         }
+
+        public virtual void Move()
+        {
+            Console.WriteLine("Животное идёт");
+        }
+
+        public int CompareTo(object o)
+        {
+            Animals animal = o as Animals;
+            if (animal != null)
+            {
+                if (animal.Name == this.Name)
+                {
+                    return 0;
+                }
+                else
+                {
+                    return 1;
+                }
+            }
+            else
+            {
+                throw new Exception("Невозможно сравнить два объекта");
+            }
+        }
     }
 }
\ No newline at end of file
diff --git a/CourseApp/Cat.cs b/CourseApp/Cat.cs
index f740b3e..31528ba 100644
--- a/CourseApp/Cat.cs
+++ b/CourseApp/Cat.cs
@@ -42,6 +42,11 @@ public override int Age
             }
         }
 
+        public override void Move()
+        {
+            Console.WriteLine("Кот крадётся");
+        }
+
         public override string RunningSpeed()
         {
             return "Средняя скорость домашнего кота во время бега - 43 - 45 км/ч, максимальная - до 50 км/ч";
@@ -56,6 +61,7 @@ public override void Info()
         {
             Console.WriteLine(this.ToString());
             Console.WriteLine(this.RunningSpeed());
+            this.Move();
         }
     }
 }
\ No newline at end of file
diff --git a/CourseApp/CourseApp.csproj b/CourseApp/CourseApp.csproj
index c941549..4119573 100644
--- a/CourseApp/CourseApp.csproj
+++ b/CourseApp/CourseApp.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp3.0</TargetFramework>
+    <TargetFramework>netcoreapp 3.1</TargetFramework>
     <TreatWarningsAsErrors>True</TreatWarningsAsErrors>
     <NoWarn>1573,1591,1701;1702;1705;</NoWarn>
   </PropertyGroup>
@@ -20,4 +20,4 @@
     <AdditionalFiles Include="../_stylecop/stylecop.json" />
   </ItemGroup>
 
-</Project>
\ No newline at end of file
+</Project>
diff --git a/CourseApp/Dog.cs b/CourseApp/Dog.cs
index e380c5d..482363f 100644
--- a/CourseApp/Dog.cs
+++ b/CourseApp/Dog.cs
@@ -56,6 +56,7 @@ public override void Info()
         {
             Console.WriteLine(this.ToString());
             Console.WriteLine(this.RunningSpeed());
+            this.Move();
         }
     }
 }
\ No newline at end of file
diff --git a/CourseApp/IComparable.cs b/CourseApp/IComparable.cs
new file mode 100644
index 0000000..93541ff
--- /dev/null
+++ b/CourseApp/IComparable.cs
@@ -0,0 +1,9 @@
+using System;
+
+namespace CourseApp
+{
+    public interface IComparable
+    {
+        int CompareTo(object o);
+    }
+}
\ No newline at end of file
diff --git a/CourseApp/IMovable.cs b/CourseApp/IMovable.cs
new file mode 100644
index 0000000..e1de7d7
--- /dev/null
+++ b/CourseApp/IMovable.cs
@@ -0,0 +1,9 @@
+using System;
+
+namespace CourseApp
+{
+    public interface IMovable
+    {
+        void Move();
+    }
+}
\ No newline at end of file
diff --git a/CourseApp/Program.cs b/CourseApp/Program.cs
index 8840d95..a904eb7 100644
--- a/CourseApp/Program.cs
+++ b/CourseApp/Program.cs
@@ -57,9 +57,9 @@ public static void Main(string[] args)
             Console.WriteLine("Задание В:");
             Console.WriteLine("==========");
             foreach (var item in taskBRes)
-                {
-                    Console.WriteLine($"y1 = {item}");
-                }
+            {
+                Console.WriteLine($"y1 = {item}");
+            }
 
             Console.WriteLine("==========");
             Animals[] animals = new Animals[2];
@@ -70,6 +70,15 @@ public static void Main(string[] args)
                 animal.Info();
                 Console.WriteLine();
             }
+
+           if (animals[0].CompareTo(animals[1]) == 0)
+           {
+               Console.WriteLine("Животные имеют одинаковую кличку");
+           }
+           else
+           {
+               Console.WriteLine("Животные имеют разные клички");
+           }
         }
     }
 }