1) Alter 2) Alter kitty 3) Alter, pet-style 4) Animal hospital request 5) Avoid cat litters 6) Castrate 7) Desex 8) Desexualise 9) Desexualize 10) Do a lab procedure 11) Do a veterinary job 12) Engage in litter prevention 13) Ensure kittenlessness 14) Fix a hot dog 15) Fix at a vets office 16) Fix at the vet Found on https://www.crosswordclues.com/clue/spay
• (v. t.) The male of the red deer in his third year; a spade. • (v. t.) To remove or extirpate the ovaries of, as a sow or a bitch; to castrate (a female animal). Found on http://thinkexist.com/dictionary/meaning/spay/
The operation to remove a female cat's uterus and ovaries so that she no longer comes into season and cannot have kittens. Found on http://www.cats.org.uk/cat-glossary/
Spay noun [ Confer Spade a spay, Spay , transitive verb ] (Zoology) The male of the red deer in his third year; a spade. Found on http://www.encyclo.co.uk/webster/S/156
Spay transitive verb [ imperfect & past participle Spayed ; present participle & verbal noun Spaying .] [ Confer Armor. spac'hein , spaza to geld, W. dyspaddu to geld, Latin spado a eunuch, Greek ....] To rem... Found on http://www.encyclo.co.uk/webster/S/156