C :

#include<stdio.h>
#include<string.h>

int main()
{
	char w1[20],w2[20],w3[20];
	scanf("%s\n%s\n%s",w1,w2,w3);

	if (strcmp(w1,"vertebrado")==0)
	{
	    if (strcmp(w2,"ave")==0)
		{
		    if (strcmp(w3,"carnivoro")==0)
			{
			    printf("aguia");
			}
			else if (strcmp(w3,"onivoro")==0)
			{
			    printf("pomba");
			}
		}
		else if (strcmp(w2,"mamifero")==0)
		{
		    if (strcmp(w3,"onivoro")==0)
			{
			    printf("homem");
			}
			else if (strcmp(w3,"herbivoro")==0)
			{
			    printf("vaca");
			}
		}
	}
	if (strcmp(w1,"invertebrado")==0)
	{
	    if (strcmp(w2,"inseto")==0)
		{
		    if (strcmp(w3,"hematofago")==0)
			{
			    printf("pulga");
			}
			else if (strcmp(w3,"herbivoro")==0)
			{
			    printf("lagarta");
			}
		}
		else if (strcmp(w2,"anelideo")==0)
		{
		    if (strcmp(w3,"hematofago")==0)
			{
			    printf("sanguessuga");
			}
			else if (strcmp(w3,"onivoro")==0)
			{
			    printf("minhoca");
			}
		}
	}
	

    return 0;
}

C++ :

#include<stdio.h>
int main()
{
	char n1[13],n2[13],n3[13];
	scanf("%s%s%s",n1,n2,n3);
	char ch1=n1[0],ch2=n2[0],ch3=n3[0],ch4=n3[2];
	if(ch1=='v')
	{
		if(ch2=='a')
		{
			if(ch3=='c')
			{
				printf("aguia");
			} 
			else if(ch3=='o')
			{
				printf("pomba"); 
			}
		}
		else if(ch2=='m')
		{
			if(ch3=='o')
			{
				printf("homem");
			} 
			else if(ch3=='h')
			{
				printf("vaca");
			}
			
		}
	}
	else if(ch1=='i')
	{
		if(ch2=='i')
		{
			if(ch4=='m')
			printf("pulga");
			else if(ch4=='r')
			printf("lagarta");
		}
		else if(ch2=='a')
		{
			if(ch3=='h')
			printf("sanguessuga");
			else if(ch3=='o')
			printf("minhoca"); 
		}
	}
	return 0;
}

Java :

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String one = scanner.next();
        String two = scanner.next();
        String three = scanner.next();
if (one.equals("vertebrado")){

    if (two.equals("ave")) {
        if (three.equals("carnivoro")) {
            System.out.println("aguia");
        }else if (three.equals("onivoro")) {
            System.out.println("pomba");
        }

    }else if (two.equals("mamifero")) {
        if (three.equals("onivoro")) {
            System.out.println("homem");
        }else if (three.equals("herbivoro")) {
            System.out.println("vaca");
        }

    }
}else if (one.equals("invertebrado")) {
    if (two.equals("inseto")) {
        if (three.equals("hematofago")) {
            System.out.println("pulga");
        }else if (three.equals("herbivoro")) {
            System.out.println("lagarta");
        }
    }else if (two.equals("anelideo")){
        if (three.equals("hematofago")) {
            System.out.println("sanguessuga");
        }else if (three.equals("onivoro")) {
            System.out.println("minhoca");
        }

    }
}
    }
}