I would have the vets office check your pups poop in about 2 weeks, you don't need an appointment just take the poop in. That will save you some money.
But if your just asking if it is bad "yes", most those cats have fleas and you know what the vet says all it takes is one flea to get tape worm. They poop little worms and if your dog eats it they will get the same, sorry.
But any poop is not good any ways..yaaak
Best of Luck!