How adorable! She does look like a field spaniel, but I think it's prolly a coincidence. Field spaniels are rare. It says only 137 were registered with the AKC in 2005. That's 1/3 the amount of Neopolitan Mastiffs registered, and 1/2 the amount of Clumber Spaniels registered. I think the odds of coming across one as a random foster/rescue are extremely low. Of course, that doesn't mean it's impossible. I think it's just unlikely.