I have an adoptive mommy who has done wild animal recue on multiple species for over 30 yrs. The go-to cure she uses for animals & humans is Marigold. It's a natural antibiotic that animals and humans cannot build a resistance to. The seeds are best, but the leaves & stems will work also. Boil 1/4 cup water and make a tea from the seeds or stems/leaves. Let it steep for a few minutes (it won't get super dark, just a light golden yellow color). Strain out the seeds/stems/leaves. I've dropped in on both my cat and dog's eyes when they get colds. I've used it on myself as well. Eye's clear up within 24 hrs or sooner. I've had them (cat & dog) drink it, and I drink it as well if I'm not feeling well.
I feed & water about 10 stray cats in the neighborhood and put marigold tea in their common water dish once in awhile. I will be trying the ACV in the water tomorrow b/c 2 of the strays sound like they're having respiratory issues. I'm glad I stumbled onto this site. I wanted to share w/everyone about the marigold seed tea.