: Owners must watch for the "3-2-1 rule" regarding lumps after injection: seek a vet if a lump lasts 3 months, is larger than 2 cm, or increases in size 1 month after the shot.
“To have all of that done by a vet, even a low-cost vet... will cost you more than our adoption fees.”
Owners often weigh the extreme cost difference when managing multiple kittens or feral litters.