Two dogs here. Jeffrey, a Treeing Walker Coonhound, is 12 years old and I adopted him from a person who rescued him in Georgia (USA) about 6 years ago. A local rescue group here in New Jersey arranged the transportation. Jeffrey's favoring ASOIAF quote is:
"A bear there was, a bear, a bear! all black and brown, and covered with hair. The bear! The bear!" There are black bears in my neighborhood and when Jeffrey scents one he desperately wants to hunt it. Takes considerable effort to hold on to his leash. Only happens a few times a year, fortunately.
The other dog I adopted a few months ago, "Muffet" about 2 years old, American English Coonhound a/k/a Redtick Coonhound. She has similar reactions to the scent of an animal, not sure what type, but I suspect that it is the fox that lives in the woods behind my house.