My dog that died in 1998 at the age of 18 was deaf and blind. She grew up fine til she got older and became deaf and blind. Sometime we would try to talk to her but she cant hear us, also she would bump into things in the house because she cant see them.
The dog I have now, Kiki, she is 12 to 13 years old, and she is starting to go deaf and blind as well. I could tell because she just doesnt act the way she use to do. Sometime when i yell for her name from another room (for treats) she would not hear us and we have to go and get her now. Also she if in same room, when say her name she would not perk up like she used to. so we knew she was going deaf. for the blind part, well i just have a feeling she is not seeing as well as she used to do.
That sucks eh.
for the cats, well Milly is 10 yrs old, and she is grumpy and a miserable cat!. Other cats are fine, Spooky is slightly older than Milly and she is fine no problem. My other two cats, well they are not old enough yet, as one is 6 and another is 14 weeks. I guess it depends on individual.