What is the right way to do inheritance with Object.create() ?

Naive, very broken approach

function Animal(genus, species) {
    var animal = Object.create(Animal.prototype);
    animal.genus = genus;
    animal.species = species;
    return animal;
}
 
 
function Dog(species) {
    // Clear the following line fails, since Animal explicitly Object.create()s an Animal instance
    // How do I properly re-use the Animal constructor?
    return Animal.prototype.constructor.call(this, 'Canis', species);
}
Dog.prototype = Object.create(Animal.prototype);
Dog.prototype.constructor = Dog;
 
var dog = Dog('lupus');
console.log(dog); // {genus: 'Canis', species: 'lupus'}, as expected
console.log(dog instanceof Dog); // False, but it should be true
console.log(dog instanceof Animal); // True, as expected

Separated init from ctor, seems convoluted

function Animal(genus, species) {
    var animal = Object.create(Animal.prototype);
    animal.init(genus, species);
    return animal;
}
 
Animal.prototype.init = function(genus, species) {
    this.genus = genus;
    this.species = species;
}
 
 
function Dog(species) {
    var dog = Object.create(Dog.prototype);
    dog.init('Canis', species);
    return dog;
}
Dog.prototype = Object.create(Animal.prototype);

var dog = Dog('lupus');
console.log(dog); // {genus: 'Canis', species: 'lupus'}, as expected
console.log(dog instanceof Dog); // True, as expected
console.log(dog instanceof Animal); // True, as expected

Set __proto__, makes me nervous since I don't know what I'm doing. And I hear it's slow.

function Animal(genus, species) {
    var animal = Object.create(Animal.prototype);
    animal.genus = genus;
    animal.species = species;
        return animal;
}


function Dog(species) {
        var dog = Animal.prototype.constructor.call(this, 'Canis', species);
        dog.__proto__ = Object.create(Dog.prototype);
        return dog;
}
Dog.prototype = Object.create(Animal.prototype);
Dog.prototype.constructor = Dog;

var dog = Dog('lupus');
console.log(dog); // {genus: 'Canis', species: 'lupus'}, as expected
console.log(dog instanceof Dog); // True, as expected
console.log(dog instanceof Animal); // True, as expected