One bird name that ends with the letters "et" is the "pipit." Pipits are small, ground-dwelling Songbirds found in various habitats, often characterized by their slender bodies and long tails. They are known for their distinctive melodic calls and are commonly found in fields and grasslands.
ferret
Grosbeak (bird) and yak are animals that end with the letters AK. Avocet (bird), cricket, egret, hornet, parakeet, piglet (baby pig) and yellow jacket are animals that end with the letters ET.
Et cetera
Extra-terrestrial
gourmand (masc.), spelled gourmande when in the feminine.
Cabaret
If I've understood you correctly, you are looking for: √ET Which is Tick-ET, ie Ticket.
Here are a few of them :)BetGetJetLetMetNetPetSetTetVetWetYet
Letters fetters wetters
buffet ballet
Elliot's last name is never mentioned.
extra terrestrial