Monthly Archives: March 2015

Labradoodles and other “designer” cross-breeds


In response to a question asked – this post is going touch on breeding and genetics in the dog world. The question asked was; “are Labradoodles (and other designer cross-breeds) infertile? – like a mule is.”

The short answer is no.

Two Labradoodles can have puppies – the argument these days is whether or not the offspring of two Labradoodles is still a Labradoodle, or just a mongrel… but that’s a different issue altogether!

A Labradoodle is the offspring of a Labrador crossed with a Poodle (miniature, small, or standard).

Labradoodle (open source)
Labradoodle (open source)

A Labradoodle is genetically different, and genetically the same as your little Dachshund, your beautiful Bulldog, and your fluffy Akita. They are also genetically the same, and genetically different to the Wolf and other wild Canid species.

The family Canidae is broken down into the genus Canis – Wolves, dogs and Jackals; and the genus Vulpues – foxes. The Wolf is its own species within this genus – Canis lupus; the domestic dog is its own species – Canis familiaris.
Canis lupus is divided into subspecies, such as; Grey Wolves and Red Wolves.
Canis familiaris has lots of breeds within the species, but these are not scientifically classified as subspecies. Scientifically the Springer Spaniel and the Irish Wolfhound are the same.

Domestic dogs, Wolves, and Jackals all have 39 pairs of chromosomes. If two dogs breed, the offspring has 39 pairs of chromosomes. If two Wolves breed, the offspring has 39 pairs of chromosomes. If a domestic dog and a Wolf breed, the offspring has 39 pairs of chromosomes. This means that the offspring of any mix are all fertile.

A mule is infertile because a donkey has 31 pairs of chromosomes, and a horse has 32 pairs of chromosomes – the offspring of the two does not have an equal amount of chromosomes; there is not enough to for all to be paired. Therefore, the offspring cannot reproduce. The donkey is a different species to the horse, hence the genetic difference.

A Labradoodle is just the same as a mongrel – it’s a dog. Therefore, it can breed and successfully reproduce with other dogs; no matter what breed. As a cute example, see the image below – she is the adorable offspring of a Chocolate Labrador (Dad) and a Labrador x Springer Spaniel (Mum). Just a cute, little, baby dog!

3 Part Lab, 1 Part Springer Spaniel (Cross-breed)
3 Part Lab, 1 Part Springer Spaniel (Cross-breed)

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New Discoveries: Atlantic Coast Leopard Frog


A new discovery in December 2014, as well as almost 80 years ago! Ecologist Carl Kauffeld claimed this little species existed, back in 1937; however, at the time, received no scientific recognition for it. The Atlantic Coast Leopard Frog – Rana Kauffeldi was named to honour the man who originally discovered this species.

Atlantic Coast Leopard Frog (open source: Wikipedia)
Atlantic Coast Leopard Frog (open source: Wikipedia)

The colourations of this little frog range from light greens to greys, with darks spots and stripes. The colouration of an individual can lighten/ darken according to seasons; so as to blend in better with the undergrowth, to avoid detection by predators. The Atlantic Coast Leopard Frog lives in the damp ground, where there is vegetation/ plants for cover; as well as near/ in shallow waters. The shallow waters are also the site for breeding.

With this new (or old) discovery, the total of Leopard Frog species is now 19. Northern and Southern Leopard Frogs, however is distinctly different genetically. This is what makes this a new species; its’ genetic diversity from other, similar species. However, this new species also has a unique trait, that contributes to its’ individualism; the sound it makes sounds more like a cough than a croak.

2014 welcomed this little frog species as a (new) recognised species.