Saw the pics…...I think it is just an unusual variation of tri color. With the tan extending very high. But Fula is just a variation of tri also, yes?
I think it may be related to blowing coat...but my guess is that this dog will always have some bleeding as an adult.
Definitely, DEFINITELY not a brindle or trindle. That ALWAYS involves stripes
And yes...the rule of thumb for all Basenjidom is once a month, regardless of what your vet says. Even with testing once a month, a dog can spill sugar on the day of testing in, say, October, and then be clear on the day of testing in November, and then spilling again on testing day in December...so some people test several days in a row each month. The longer you delay the discovery,the more damage can be done to the kidneys.