I use Ark Naturals Royal Coat - and it's the best fish oil I've ever tried. I like it bc it has the fatty acids DHA/EPA (from fish), but also has fatty acids GLA/LA (borage oil), which are so beneficial for atopy / skin. Also, you must supplement w. Vit E when giving fish oil, and this one already has the E in it.
Do you think the chewing is seasonal?