Labradors are a type of retrieving dog. 
yes, I think bloodhounds fit into that same description if I am not mistaken.
I think bloodhounds were more bred for actually hunting rather then just retrieving. 
oh are there other retrieving dog besides the Labradors
The Irish Wolfhound was developed as a war hound and was used for hunting too
oh does that breed exist today
While the breed is VERY old; coming from 7000 BC, they are still around today. 
I wonder how hard it would be to find one these days, some breeds have been bred so much they are not like the original dogs at all
Jack Russell Terrier
The Jack Russell Terrier is a small terrier that has its origins in fox hunting in England. It is principally white-bodied and smooth, rough or broken-coated and can be any colour.
The Jack Russell is frequently confused with the Parson Russell terrier (see the American Kennel Club) and the Russell terrier, which is a shorter-legged, stockier variety. (Within the "Fédération Cynologique Internationale", the "Russell terrier" is also known as "Jack Russell terrier".
The first St. John's dog was said to be brought to England in or around 1820, but the breed's reputation had already spread to England; there is a story that the 2nd Earl of Malmesbury saw a St. John's dog on a fishing boat and immediately made arrangements with traders to have some of these dogs imported to England. These ancestors of the first labradors so impressed the Earl with their skill and ability for retrieving anything within the water and on shore that he devoted his entire kennel to developing and stabilising