Can A 5 Year Old Take Mylanta Will My 5 Year Old Dog Be Ok With A New Dog? Are 2 Dogs Much More Difficult To Take Care Of Than 1 Dog?

Will my 5 year old dog be ok with a new dog? Are 2 dogs much more difficult to take care of than 1 dog? - can a 5 year old take mylanta

I have a Shetland Sheepdog 5 years, who is very possessive. I have a laboratory in a shelter close to 4.5 years and is very calm and sweet and I really liked. If I do get this dog house, my Sheltie to be jealous or happy to businesses during the day are not at home? In addition, 2 dogs are much more difficult to care for a dog 1?