The albatross has long been considered a symbol of good luck, particularly by those who work on or travel at sea. People of the albatross are calm and graceful, with a great endurance that allows them to cruise through difficulties or lengthy endeavors with an ease that many wish they had.
Patronus Analysis 040 Basset Hound Another unusual patronus in that it is most common in 2 completely different houses: Hufflepuff and Slytherin. A universal characteristic of those with the Basset Hound patronus is that they are smart. Due to this, they study well and if they apply themselves, can go far in education and hobbies.
Patronus means "protector", "guardian", or simply "patron" in Latin, specifically reflecting the entire role that the Patronus Charm plays. In archaic Latin, it meant "father", which is very interesting, considering that Harry Potter's Patronus is the same as his father's Patronus and Animagus form, a stag.
Each wizard's patronus takes the shape of a different animal, and often reflect a character's personality. For example, Harry's is a stag and Professor Snape's is a doe. Here's a look at Hermione casting her patronus in the "Order of the Phoenix" movie.
Snape loved Lily, so much so his Patronus changed to that of her's, which was a doe. A Patronus charm is summoned using a happy memory, and Snape's memory contained Lily. He didn't choose to change his Patronus, it changed purely because of his love for Lily.
tl;dnr: Ron's Patronus isn't a Jack Russell Terrier. It's a Crup, a wizarding breed of dog that looks very similar to a Jack Russell Terrier, save for their naturally forked tails. In the Order of the Phoenix film, Ron's Patronus is portrayed as "a Jack Russell Terrier", as also repeated on Pottermore.