Are dog hairs impure?

Q: I travel for work and sometimes my agent takes me around in his vehicle. There are times when his vehicle has some dog hair on the seats and on the floor. By me sitting on the seat, some of the hair may come onto my clothes which I try and remove. Can I read salaah or are my clothes napaak? 

Child remaining in the womb of the mother for more than 9 months

Q: In Behishti zewar theres one masala that states that if a husband passes away and then after a year the lady gives birth to a child, it will be attributed to him (she didnt get married again at all after his passing). Conception happens a few days as afterwards the nutfah dies and conception is only 9 to 10 months.

Is it normal for a mother to carry an offspring for 12 months?