[ASK] Why can't I override the Base Class method?

Hi Experts,

I have a base class that has a virtual method named Call as follow:

template<typename A, typename B>
class BaseFunc
{
public:
	virtual B Call(A in1)
	{
		B b;
		return b;
	}
};

Select allOpen in new window

Then I create a new class derived from the base class as follow:

class AnimalName :
	public BaseFunc<Animal, std::string>
{
public:
	virtual std::string Call(
		const std::shared_ptr<Animal> &customer);
};

Select allOpen in new window

The class Animal is created in two files; Animal.h and Animal.cpp. The Animal.h file content is as follow:

class Animal
{
public:
	static std::vector<Animal> animals;
	int id = 0;
	std::string name = "";

	Animal();

	static std::vector<std::string> GetAnimalNames();

	template<typename T>
	static std::vector<T> GetAnimalByFunction(
		const std::shared_ptr<BaseFunc<Animal, T>> &funct);
};

Select allOpen in new window

And the Animal.cpp file content is as follow:

#include "Animal.h"

using namespace std;

vector<Animal> Animal::animals;

Animal::Animal()
{
}

string AnimalName::Call(
	const shared_ptr<Animal> &animal)
{
	return animal->name;
}

vector<string> Animal::GetAnimalNames()
{
	return Animal::GetAnimalByFunction<string>(
		make_shared<AnimalName>());
}

template<typename T>
vector<T> Animal::GetAnimalByFunction(
	const shared_ptr<BaseFunc<Animal, T>> &funct)
{
	vector<T> returnList;
	for (auto customer : Animal::animals)
	{
		returnList.push_back(
			funct->Call(customer));
	}
	return returnList;
}

Select allOpen in new window

Now, I  have a main.cpp file as follow:

#include <iostream>
#include "Animal.h"

using namespace std;

void SetAnimals()
{
	int i = 0;

	vector<string> animalNames;
	animalNames = {
		"Peanut",
		"Coco",
		"Rocky",
		"Harley",
		"Pepper",
		"Roxy"
	};

	for (auto name : animalNames)
	{
		Animal a;
		a.id = i++;
		a.name = name;
		Animal::animals.push_back(a);
	}
}

int main()
{
	Animal a;

	SetAnimals();

	cout << "Animal names:" << endl;
	vector<string> animals =
		a.GetAnimalNames();
	for (auto name : animals)
	{
		cout << name << endl;
	}

	return 0;
}

Select allOpen in new window

When I run the code, I get no animal names since the Call() method is invoked from the base class (BaseFunc) instead of the derived class (AnimalName).

The following is my console snapshot:
How can I override the Call method in BaseFunc class?
override.zip