I’m not in the US, but here are some that are.elephant whistle
dragon whistle
sadly, I couldn’t find the wolf shaped ones that ship to the US, but here are colourful ones
I just used animal head whistle or brass whistle, but here are the links.
https://www.amazon.com/Ynxee-Elephant-Whistles-Training-Portable/dp/B09C1DQ78B/ref=mp_s_a_1_2?crid=1FUGYEVEKGSLM&keywords=elephant+whistle&qid=1681584222&sprefix=elephant+whistle%2Caps%2C196&sr=8-2
https://www.amazon.com/Ynxee-Whistles-Training-Portable-Keychain/dp/B09C1FHY59/ref=mp_s_a_1_5?crid=2UAKIZCES5BV3&keywords=dragon+whistle&qid=1681584286&sprefix=dragon+whistle%2Caps%2C171&sr=8-5