We learned this after we decided we wanted him, Tank actually didn't have any other prospective homes. As you can see from the pics, he does not have the classic Cavalier look. Also, he's going to be about 30 pounds, vs the 15-20 that is typical of the breed - they are technically a toy breed. And he is very active and bitey! Honestly - he's a Labrador in a Cavalier suit. Which suits us fine! But a home wanting a typical Cavalier probably wouldn't have been happy with Tank. We were feeling a bit guilty about keeping one and depriving somebody who really wanted him, but now we don't have to feel guilty!
We'll be fostering another litter after Memorial Day. Only for 3 weeks, though, to socialize them. Those are all normal size, no Tanks! So I solemnly swear we will not keep one! (If you don't believe me, I don't blame you.)