Cons
Require Work
Puppies and kittens need to be socialized, are very energetic and require exercise, must be supervised for their safety, need to learn the rules and boundaries, and must be housetrained.
Unpredictable
Kittens and puppies are still developing and may have underlying health or behavior problems. Their personalities are still being shaped, so you’re not fully aware of what you’re getting.
Destructive
Get ready cause it’s going to be a bumpy beginning. Puppies and kittens alike will make a mess of your furniture, shoes, and other personal belongings. They will chew, scratch, and soak plenty of things on their way to adulthood.
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The Love They Give
Old and young alike will love and bond with you. Pets are resilient and open-hearted, especially dogs. You will overcome and so will they. Together, you will develop a loving and loyal relationship.
Pros
Adults Are Mature
Adult cats and Dogs are less energetic, understand that there are rules and boundaries, should already be housetrained, are most likely used to people and other animals, and can be left alone with little worry for their safety.
Predictable
Adult cats and dogs are fully developed, so you know what you’re getting. They have medical histories and spending a little time with them will bring their personality to light.
Great First Time Pets
If you’re not able to devote time to training and socializing, adult pets are probably the way to go. If you’ve never raised a puppy or kitten, adult animals can help you prepare for it gradually.