Alligator (1980) Pet Gator Turns Into Giant Sewer-Mutant Man Eater

One of many 'when animals attack' films that were trending in the late 70s & early 80s, saw this one several times on TV in the early 80s, very effective giant-gator special fx on my young mind.
*Note: The TV version had alternate/additional scenes, which I do have and will upload later after this one.
Plot:
A pet baby alligator is flushed down a toilet and survives in the city sewers. Twelve years later, it grows to an enormous size thanks to a diet of discarded laboratory dogs injected with growth hormones. Now, humans have entered the menu.