My dog has been acting really strange today. Should I be worried?

TOTALLY NORMAL I HAVE A 1 AN AHALF YEAR OLD BEAGLE UGGH SHE IS A HAND FUL SHE ACTS LIKE SHE RULES THE HOUSE SHE GROWLS AT ALLL OF US WHEN SHES TRYING TO SLEEP OR SHE GROWLS WHEN WE PET HER SHE JUST THINK SHES RULS THE WORLD....its just a stage he'll grow out of it i promise its a beagle/puppy things. goodluck if it continues ask your vet