? about Bird Biotic. It contains Doxycycline Hyclate 100mg. I was looking at this link: http://www.petfinder.com/pet-health/feline-upper-respiratory.html it said "Broad-spectrum antibiotics to protect against secondary bacterial infections. Tetracycline or doxycycline are the drugs of choice to use against bordetella and chlamydia and may also be used in the case of the viral infections." So I was wondering if I could give the Bird Biotic to my cat, and if so how much would I give? They are in pill form and it says to open them up and put in 8oz. of water for birds. Any help would be most appreciated!